fix flake8 errors

flask_admin/__init__.py

@@ -3,4 +3,4 @@ __author__ = 'Flask-Admin team'
 __email__ = 'serge.koval+github@gmail.com'
 
 
-from .base import expose, expose_plugview, Admin, BaseView, AdminIndexView
+from .base import expose, expose_plugview, Admin, BaseView, AdminIndexView  # noqa: F401

flask_admin/_compat.py

 # -*- coding: utf-8 -*-
+# flake8: noqa
 """
     flask_admin._compat
     ~~~~~~~~~~~~~~~~~~~~~~~

flask_admin/base.py

@@ -9,7 +9,7 @@ from flask_admin._compat import with_metaclass, as_unicode
 from flask_admin import helpers as h
 
 # For compatibility reasons import MenuLink
-from flask_admin.menu import MenuCategory, MenuView, MenuLink
+from flask_admin.menu import MenuCategory, MenuView, MenuLink  # noqa: F401
 
 
 def expose(url='/', methods=('GET',)):
@@ -670,7 +670,6 @@ class Admin(object):
         for view in self._views:
             app.register_blueprint(view.create_blueprint(self))
 
-
     def _init_extension(self):
         if not hasattr(self.app, 'extensions'):
             self.app.extensions = dict()
@@ -699,4 +698,4 @@ class Admin(object):
         """
             Return menu links.
         """
-        return self._menu_links
\ No newline at end of file
+        return self._menu_links

flask_admin/contrib/appengine/__init__.py

+# flake8: noqa
 try:
     import wtforms_appengine
 except ImportError:

flask_admin/contrib/appengine/fields.py

@@ -3,6 +3,7 @@ from google.appengine.ext import ndb
 
 import decimal
 
+
 class GeoPtPropertyField(StringField):
     def process_formdata(self, valuelist):
         if valuelist:

flask_admin/contrib/appengine/form.py

@@ -2,6 +2,7 @@ from wtforms_appengine.ndb import ModelConverter
 from .fields import GeoPtPropertyField
 from flask_admin.model.form import converts
 
+
 class AdminModelConverter(ModelConverter):
     @converts('GeoPt')
     def convert_GeoPtProperty(self, model, prop, kwargs):

flask_admin/contrib/appengine/view.py

@@ -11,6 +11,7 @@ from flask_wtf import Form
 from flask_admin.model.form import create_editable_list_form
 from .form import AdminModelConverter
 
+
 class NdbModelView(BaseModelView):
     """
     AppEngine NDB model scaffolding.
@@ -32,7 +33,7 @@ class NdbModelView(BaseModelView):
         pass
 
     def scaffold_filters(self):
-        #TODO: implement
+        # TODO: implement
         pass
 
     form_args = None
@@ -75,7 +76,7 @@ class NdbModelView(BaseModelView):
 
     def get_list(self, page, sort_field, sort_desc, search, filters,
                  page_size=None):
-        #TODO: implement filters (don't think search can work here)
+        # TODO: implement filters (don't think search can work here)
 
         q = self.model.query()
 
@@ -88,7 +89,7 @@ class NdbModelView(BaseModelView):
         if not page_size:
             page_size = self.page_size
 
-        results = q.fetch(page_size, offset=page*page_size)
+        results = q.fetch(page_size, offset=page * page_size)
 
         return q.count(), results
 
@@ -102,7 +103,7 @@ class NdbModelView(BaseModelView):
             model.put()
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to create record. %(error)s',
+                # flash(gettext('Failed to create record. %(error)s',
                 #    error=ex), 'error')
                 logging.exception('Failed to create record.')
             return False
@@ -117,7 +118,7 @@ class NdbModelView(BaseModelView):
             model.put()
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to update record. %(error)s',
+                # flash(gettext('Failed to update record. %(error)s',
                 #    error=ex), 'error')
                 logging.exception('Failed to update record.')
             return False
@@ -126,19 +127,19 @@ class NdbModelView(BaseModelView):
 
         return True
 
-    def delete_model(self,  model):
+    def delete_model(self, model):
         try:
             model.key.delete()
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to delete record. %(error)s',
+                # flash(gettext('Failed to delete record. %(error)s',
                 #    error=ex),
                 #    'error')
                 logging.exception('Failed to delete record.')
             return False
         else:
             self.after_model_delete(model)
-        
+
         return True
 
 
@@ -155,7 +156,8 @@ class DbModelView(BaseModelView):
 
     def scaffold_sortable_columns(self):
         # We use getattr() because ReferenceProperty does not specify a 'indexed' field
-        return [k for (k, v) in self.model.__dict__.iteritems() if isinstance(v, db.Property) and getattr(v, 'indexed', None)]
+        return [k for (k, v) in self.model.__dict__.iteritems()
+                if isinstance(v, db.Property) and getattr(v, 'indexed', None)]
 
     def init_search(self):
         return None
@@ -164,14 +166,14 @@ class DbModelView(BaseModelView):
         pass
 
     def scaffold_filters(self):
-        #TODO: implement
+        # TODO: implement
         pass
 
     def scaffold_form(self):
         return wt_db.model_form(self.model())
 
     def get_list(self, page, sort_field, sort_desc, search, filters):
-        #TODO: implement filters (don't think search can work here)
+        # TODO: implement filters (don't think search can work here)
 
         q = self.model.all()
 
@@ -180,7 +182,7 @@ class DbModelView(BaseModelView):
                 sort_field = "-" + sort_field
             q.order(sort_field)
 
-        results = q.fetch(self.page_size, offset=page*self.page_size)
+        results = q.fetch(self.page_size, offset=page * self.page_size)
         return q.count(), results
 
     def get_one(self, encoded_key):
@@ -194,7 +196,7 @@ class DbModelView(BaseModelView):
             return model
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to create record. %(error)s',
+                # flash(gettext('Failed to create record. %(error)s',
                 #    error=ex), 'error')
                 logging.exception('Failed to create record.')
             return False
@@ -206,23 +208,24 @@ class DbModelView(BaseModelView):
             return True
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to update record. %(error)s',
+                # flash(gettext('Failed to update record. %(error)s',
                 #    error=ex), 'error')
                 logging.exception('Failed to update record.')
             return False
 
-    def delete_model(self,  model):
+    def delete_model(self, model):
         try:
             model.delete()
             return True
         except Exception as ex:
             if not self.handle_view_exception(ex):
-                #flash(gettext('Failed to delete record. %(error)s',
+                # flash(gettext('Failed to delete record. %(error)s',
                 #    error=ex),
                 #    'error')
                 logging.exception('Failed to delete record.')
         return False
 
+
 def ModelView(model):
     if issubclass(model, ndb.Model):
         return NdbModelView(model)

flask_admin/contrib/fileadmin/__init__.py

@@ -300,12 +300,12 @@ class BaseFileAdmin(BaseView, ActionsMixin):
 
         # Convert allowed_extensions to set for quick validation
         if (self.allowed_extensions and
-            not isinstance(self.allowed_extensions, set)):
+                not isinstance(self.allowed_extensions, set)):
             self.allowed_extensions = set(self.allowed_extensions)
 
         # Convert editable_extensions to set for quick validation
         if (self.editable_extensions and
-            not isinstance(self.editable_extensions, set)):
+                not isinstance(self.editable_extensions, set)):
             self.editable_extensions = set(self.editable_extensions)
 
         super(BaseFileAdmin, self).__init__(name, category, endpoint, url,
@@ -436,7 +436,7 @@ class BaseFileAdmin(BaseView, ActionsMixin):
         if request.form:
             # Workaround for allowing both CSRF token + FileField to be submitted
             # https://bitbucket.org/danjac/flask-wtf/issue/12/fieldlist-filefield-does-not-follow
-            formdata = request.form.copy() # as request.form is immutable
+            formdata = request.form.copy()  # as request.form is immutable
             formdata.update(request.files)
 
             # admin=self allows the form to use self.is_file_allowed
@@ -827,7 +827,7 @@ class BaseFileAdmin(BaseView, ActionsMixin):
             # Sort by type
             items.sort(key=itemgetter(2), reverse=True)
             # Sort by modified date
-            items.sort(key=lambda values: (values[0], values[1], values[2], values[3], datetime.fromtimestamp(values[4])), reverse=True)
+            items.sort(key=lambda x: (x[0], x[1], x[2], x[3], datetime.fromtimestamp(x[4])), reverse=True)
         else:
             column_index = self.possible_columns.index(sort_column)
             items.sort(key=itemgetter(column_index), reverse=sort_desc)

flask_admin/contrib/fileadmin/s3.py

@@ -55,10 +55,11 @@ class S3Storage(object):
             raise ValueError('Could not import boto. You can install boto by '
                              'using pip install boto')
 
-        connection = s3.connect_to_region(region,
-                                          aws_access_key_id=aws_access_key_id,
-                                          aws_secret_access_key=
-                                          aws_secret_access_key)
+        connection = s3.connect_to_region(
+            region,
+            aws_access_key_id=aws_access_key_id,
+            aws_secret_access_key=aws_secret_access_key,
+        )
         self.bucket = connection.get_bucket(bucket_name)
         self.separator = '/'
 

flask_admin/contrib/geoa/__init__.py

+# flake8: noqa
 try:
     import geoalchemy2
     import shapely

flask_admin/contrib/geoa/widgets.py

@@ -38,9 +38,9 @@ class LeafletWidget(TextArea):
         kwargs.setdefault('data-geometry-type', gtype)
 
         # set optional values from constructor
-        if not "data-width" in kwargs:
+        if "data-width" not in kwargs:
             kwargs["data-width"] = self.width
-        if not "data-height" in kwargs:
+        if "data-height" not in kwargs:
             kwargs["data-height"] = self.height
         if self.center:
             kwargs["data-lat"] = lat(self.center)

flask_admin/contrib/mongoengine/__init__.py

+# flake8: noqa
 try:
     import flask_mongoengine
 except ImportError:

flask_admin/contrib/mongoengine/form.py

@@ -7,7 +7,6 @@ from flask_mongoengine.wtf import orm, fields as mongo_fields
 from flask_admin import form
 from flask_admin.model.form import FieldPlaceholder
 from flask_admin.model.fields import InlineFieldList, AjaxSelectField, AjaxSelectMultipleField
-from flask_admin.model.widgets import InlineFormWidget
 from flask_admin._compat import iteritems
 
 from .fields import ModelFormField, MongoFileField, MongoImageField

flask_admin/contrib/mongoengine/subdoc.py

@@ -18,6 +18,7 @@ def convert_subdocuments(values):
         elif isinstance(p, EmbeddedForm):
             result[name] = p
         else:
-            raise ValueError('Invalid subdocument type: expecting dict or instance of flask_admin.contrib.mongoengine.EmbeddedForm, got %s' % type(p))
+            raise ValueError('Invalid subdocument type: expecting dict or '
+                             'instance of flask_admin.contrib.mongoengine.EmbeddedForm, got %s' % type(p))
 
     return result

flask_admin/contrib/mongoengine/tools.py

@@ -2,7 +2,7 @@ def parse_like_term(term):
     """
         Parse search term into (operation, term) tuple. Recognizes operators
         in the beginning of the search term.
-        
+
         * = case insensitive (can precede other operators)
         ^ = starts with
         = = exact
@@ -24,5 +24,5 @@ def parse_like_term(term):
         oper = 'contains'
     # add case insensitive flag
     if case_insensitive:
-        oper = 'i'+oper
+        oper = 'i' + oper
     return oper, term

flask_admin/contrib/mongoengine/view.py

@@ -323,7 +323,7 @@ class ModelView(BaseModelView):
             field_class = type(f)
 
             if (field_class == mongoengine.ListField and
-                isinstance(f.field, mongoengine.EmbeddedDocumentField)):
+                    isinstance(f.field, mongoengine.EmbeddedDocumentField)):
                 continue
 
             if field_class == mongoengine.EmbeddedDocumentField:
@@ -626,7 +626,6 @@ class ModelView(BaseModelView):
 
         return True
 
-
     # FileField access API
     @expose('/api/file/')
     def api_file_view(self):
@@ -645,9 +644,7 @@ class ModelView(BaseModelView):
 
         return Response(data.read(),
                         content_type=data.content_type,
-                        headers={
-                            'Content-Length': data.length
-                        })
+                        headers={'Content-Length': data.length})
 
     # Default model actions
     def is_action_allowed(self, name):

flask_admin/contrib/peewee/__init__.py

+# flake8: noqa
 try:
     import peewee
     import wtfpeewee

flask_admin/contrib/peewee/form.py

@@ -36,15 +36,22 @@ class InlineModelFormList(InlineFieldList):
     def display_row_controls(self, field):
         return field.get_pk() is not None
 
-    # *** bryhoyt removed def process() entirely, because I believe it was buggy
-    # (but worked because another part of the code had a complimentary bug)
-    # and I'm not sure why it was necessary anyway.
-    # If we want it back in, we need to fix the following bogus query:
-    # self.model.select().where(attr == data).execute()     # `data` is not an ID, and only happened to be so because we patched it in in .contribute() below
-    #
-    # For reference:
-    # .process() introduced in https://github.com/flask-admin/flask-admin/commit/2845e4b28cb40b25e2bf544b327f6202dc7e5709
-    # Fixed, brokenly I think, in https://github.com/flask-admin/flask-admin/commit/4383eef3ce7eb01878f086928f8773adb9de79f8#diff-f87e7cd76fb9bc48c8681b24f238fb13R30
+    """ bryhoyt removed def process() entirely, because I believe it was buggy
+        (but worked because another part of the code had a complimentary bug)
+        and I'm not sure why it was necessary anyway.
+
+        If we want it back in, we need to fix the following bogus query:
+        self.model.select().where(attr == data).execute()
+
+        `data` is not an ID, and only happened to be so because we patched it
+        in in .contribute() below
+
+        For reference, .process() introduced in:
+        https://github.com/flask-admin/flask-admin/commit/2845e4b28cb40b25e2bf544b327f6202dc7e5709
+
+        Fixed, brokenly I think, in:
+        https://github.com/flask-admin/flask-admin/commit/4383eef3ce7eb01878f086928f8773adb9de79f8#diff-f87e7cd76fb9bc48c8681b24f238fb13R30
+    """
 
     def populate_obj(self, obj, name):
         pass
@@ -246,7 +253,6 @@ class InlineModelConverter(InlineModelConverterBase):
                                     allow_pk=True,
                                     converter=converter)
 
-
         prop_name = reverse_field.related_name
 
         label = self.get_label(info, prop_name)

flask_admin/contrib/peeweemodel/__init__.py

 def setup():
     import warnings
-    warnings.warn('Flask-Admin peewee integration module was renamed as flask_admin.contrib.peewee, please use it instead.')
+    warnings.warn('Flask-Admin peewee integration module was renamed as '
+                  'flask_admin.contrib.peewee, please use it instead.')
 
     from flask_admin._backwards import import_redirect
     import_redirect(__name__, 'flask_admin.contrib.peewee')
 
+
 setup()
 del setup
 
-from ..peewee.view import ModelView
+from ..peewee.view import ModelView  # noqa: F401

flask_admin/contrib/pymongo/__init__.py

+# flake8: noqa
 try:
     import pymongo
 except ImportError:

flask_admin/contrib/pymongo/tools.py

 import re
 
+
 def parse_like_term(term):
     """
         Parse search term into (operation, term) tuple

flask_admin/contrib/rediscli.py

@@ -82,8 +82,10 @@ class RedisCli(BaseView):
         self._contribute_commands()
 
         if self.shlex_check and VER < (2, 7, 3):
-            warnings.warn('Warning: rediscli uses shlex library and it does not work with unicode until Python 2.7.3. ' +
-                          'To remove this warning, upgrade to Python 2.7.3 or suppress it by setting shlex_check attribute ' +
+            warnings.warn('Warning: rediscli uses shlex library and it does '
+                          'not work with unicode until Python 2.7.3. To '
+                          'remove this warning, upgrade to Python 2.7.3 or '
+                          'suppress it by setting shlex_check attribute '
                           'to False.')
 
     def _inspect_commands(self):

flask_admin/contrib/sqla/__init__.py

+# flake8: noqa
 from .view import ModelView

flask_admin/contrib/sqla/filters.py

@@ -86,9 +86,9 @@ class FilterSmaller(BaseSQLAFilter):
 class FilterEmpty(BaseSQLAFilter, filters.BaseBooleanFilter):
     def apply(self, query, value, alias=None):
         if value == '1':
-            return query.filter(self.get_column(alias) == None)
+            return query.filter(self.get_column(alias) == None)  # noqa: E711
         else:
-            return query.filter(self.get_column(alias) != None)
+            return query.filter(self.get_column(alias) != None)  # noqa: E711
 
     def operation(self):
         return lazy_gettext('empty')
@@ -112,7 +112,7 @@ class FilterNotInList(FilterInList):
     def apply(self, query, value, alias=None):
         # NOT IN can exclude NULL values, so "or_ == None" needed to be added
         column = self.get_column(alias)
-        return query.filter(or_(~column.in_(value), column == None))
+        return query.filter(or_(~column.in_(value), column == None))  # noqa: E711
 
     def operation(self):
         return lazy_gettext('not in list')
@@ -323,7 +323,7 @@ class EnumFilterInList(FilterInList):
     def clean(self, value):
         values = super(EnumFilterInList, self).clean(value)
         if self.enum_class is not None:
-            values = [self.enum_class(value) for value in values]
+            values = [self.enum_class(val) for val in values]
         return values
 
 
@@ -335,7 +335,7 @@ class EnumFilterNotInList(FilterNotInList):
     def clean(self, value):
         values = super(EnumFilterNotInList, self).clean(value)
         if self.enum_class is not None:
-            values = [self.enum_class(value) for value in values]
+            values = [self.enum_class(val) for val in values]
         return values
 
 

flask_admin/contrib/sqla/form.py

@@ -201,10 +201,10 @@ class AdminModelConverter(ModelConverterBase):
             optional_types = getattr(self.view, 'form_optional_types', (Boolean,))
 
             if (
-                not column.nullable
-                and not isinstance(column.type, optional_types)
-                and not column.default
-                and not column.server_default
+                not column.nullable and
+                not isinstance(column.type, optional_types) and
+                not column.default and
+                not column.server_default
             ):
                 kwargs['validators'].append(validators.InputRequired())
 
@@ -222,7 +222,7 @@ class AdminModelConverter(ModelConverterBase):
 
                 if value is not None:
                     if getattr(default, 'is_callable', False):
-                        value = lambda: default.arg(None)
+                        value = lambda: default.arg(None)  # noqa: E731
                     else:
                         if not getattr(default, 'is_scalar', True):
                             value = None
@@ -547,8 +547,6 @@ class InlineModelConverter(InlineModelConverterBase):
             :return:
                 A tuple of forward property key and reverse property key
         """
-
-
         mapper = model._sa_class_manager.mapper
 
         # Find property from target model to current model

flask_admin/contrib/sqla/tools.py

@@ -9,7 +9,7 @@ from sqlalchemy.exc import DBAPIError
 from sqlalchemy.orm.attributes import InstrumentedAttribute
 
 from flask_admin._compat import filter_list, string_types
-from flask_admin.tools import iterencode, iterdecode, escape
+from flask_admin.tools import iterencode, iterdecode, escape  # noqa: F401
 
 
 def parse_like_term(term):
@@ -79,9 +79,9 @@ def tuple_operator_in(model_pk, ids):
     for id in ids:
         k = []
         for i in range(len(model_pk)):
-            k.append(eq(model_pk[i],id[i]))
+            k.append(eq(model_pk[i], id[i]))
         l.append(and_(*k))
-    if len(l)>=1:
+    if len(l) >= 1:
         return or_(*l)
     else:
         return None
@@ -117,10 +117,10 @@ def get_query_for_ids(modelquery, model, ids):
 
 def get_columns_for_field(field):
     if (not field or
-        not hasattr(field, 'property') or
-        not hasattr(field.property, 'columns') or
-        not field.property.columns):
-            raise Exception('Invalid field %s: does not contains any columns.' % field)
+            not hasattr(field, 'property') or
+            not hasattr(field.property, 'columns') or
+            not field.property.columns):
+        raise Exception('Invalid field %s: does not contains any columns.' % field)
 
     return field.property.columns
 
@@ -196,7 +196,7 @@ def is_hybrid_property(model, attr_name):
     if isinstance(attr_name, string_types):
         names = attr_name.split('.')
         last_model = model
-        for i in range(len(names)-1):
+        for i in range(len(names) - 1):
             attr = getattr(last_model, names[i])
             if is_association_proxy(attr):
                 attr = attr.remote_attr

flask_admin/contrib/sqla/view.py

@@ -52,7 +52,7 @@ class ModelView(BaseModelView):
     """
 
     column_select_related_list = ObsoleteAttr('column_select_related',
-                                             'list_select_related',
+                                              'list_select_related',
                                               None)
     """
         List of parameters for SQLAlchemy `subqueryload`. Overrides `column_auto_select_related`
@@ -831,12 +831,12 @@ class ModelView(BaseModelView):
                 if isinstance(column, tuple):
                     query = query.order_by(*map(desc, column))
                 else:
-	                query = query.order_by(desc(column))
+                    query = query.order_by(desc(column))
             else:
                 if isinstance(column, tuple):
                     query = query.order_by(*column)
                 else:
-	                query = query.order_by(column)
+                    query = query.order_by(column)
 
         return query, joins
 
@@ -940,7 +940,8 @@ class ModelView(BaseModelView):
                 spec = inspect.getargspec(flt.apply)
 
                 if len(spec.args) == 3:
-                    warnings.warn('Please update your custom filter %s to include additional `alias` parameter.' % repr(flt))
+                    warnings.warn('Please update your custom filter %s to '
+                                  'include additional `alias` parameter.' % repr(flt))
                 else:
                     raise
 

flask_admin/contrib/sqlamodel/__init__.py

 def setup():
     import warnings
-    warnings.warn('Flask-Admin sqlalchemy integration module was renamed as flask_admin.contrib.sqla, please use it instead.')
+    warnings.warn('Flask-Admin sqlalchemy integration module was renamed as '
+                  'flask_admin.contrib.sqla, please use it instead.')
 
     from flask_admin._backwards import import_redirect
     import_redirect(__name__, 'flask_admin.contrib.sqla')
 
+
 setup()
 del setup
 
-from ..sqla.view import ModelView
+from ..sqla.view import ModelView  # noqa: F401

flask_admin/form/__init__.py

@@ -2,9 +2,9 @@ from wtforms import form, __version__ as wtforms_version
 from wtforms.fields.core import UnboundField
 from flask_admin.babel import Translations
 
-from .fields import *
-from .widgets import *
-from .upload import *
+from .fields import *  # noqa: F403,F401
+from .widgets import *  # noqa: F403,F401
+from .upload import *  # noqa: F403,F401
 
 
 class BaseForm(form.Form):

flask_admin/form/fields.py

@@ -9,7 +9,8 @@ from flask_admin._compat import text_type, as_unicode
 from . import widgets as admin_widgets
 
 """
-An understanding of WTForms's Custom Widgets is helpful for understanding this code: http://wtforms.simplecodes.com/docs/0.6.2/widgets.html#custom-widgets
+An understanding of WTForms's Custom Widgets is helpful for understanding this code:
+http://wtforms.simplecodes.com/docs/0.6.2/widgets.html#custom-widgets
 """
 
 __all__ = ['DateTimeField', 'TimeField', 'Select2Field', 'Select2TagsField',
@@ -21,6 +22,7 @@ class DateTimeField(fields.DateTimeField):
        Allows modifying the datetime format of a DateTimeField using form_args.
     """
     widget = admin_widgets.DateTimePickerWidget()
+
     def __init__(self, label=None, validators=None, format=None, **kwargs):
         """
             Constructor

flask_admin/form/upload.py

@@ -200,9 +200,7 @@ class FileUploadField(fields.StringField):
                 map(lambda x: x.lower(), self.allowed_extensions))
 
     def _is_uploaded_file(self, data):
-        return (data
-                and isinstance(data, FileStorage)
-                and data.filename)
+        return (data and isinstance(data, FileStorage) and data.filename)
 
     def pre_validate(self, form):
         if self._is_uploaded_file(self.data) and not self.is_file_allowed(self.data.filename):
@@ -279,7 +277,7 @@ class FileUploadField(fields.StringField):
         if not op.exists(op.dirname(path)):
             os.makedirs(os.path.dirname(path), self.permission | 0o111)
 
-        if self._allow_overwrite == False and os.path.exists(path):
+        if (self._allow_overwrite is False) and os.path.exists(path):
             raise ValueError(gettext('File "%s" already exists.' % path))
 
         data.save(path)

flask_admin/form/widgets.py

@@ -37,7 +37,6 @@ class Select2TagsWidget(widgets.TextInput):
         return super(Select2TagsWidget, self).__call__(field, **kwargs)
 
 
-
 class DatePickerWidget(widgets.TextInput):
     """
         Date picker widget.

flask_admin/helpers.py

@@ -101,6 +101,7 @@ def flash_errors(form, message):
         errors = form[field_name].label.text + u": " + u", ".join(errors)
         flash(gettext(message, error=str(errors)), 'error')
 
+
 @contextfunction
 def resolve_ctx(context):
     """

flask_admin/model/__init__.py

+# flake8: noqa
 from .base import BaseModelView
 from .form import InlineFormAdmin
 from flask_admin.actions import action

flask_admin/model/base.py

@@ -42,7 +42,8 @@ class ViewArgs(object):
     """
         List view arguments.
     """
-    def __init__(self, page=None, page_size=None, sort=None, sort_desc=None, search=None, filters=None, extra_args=None):
+    def __init__(self, page=None, page_size=None, sort=None, sort_desc=None,
+                 search=None, filters=None, extra_args=None):
         self.page = page
         self.page_size = page_size
         self.sort = sort
@@ -599,7 +600,10 @@ class BaseModelView(BaseView, ActionsMixin):
                 start=dict(format='%Y-%m-%d %I:%M %p') # changes how the input is parsed by strptime (12 hour time)
             )
             form_widget_args = dict(
-                start={'data-date-format': u'yyyy-mm-dd HH:ii P', 'data-show-meridian': 'True'} # changes how the DateTimeField displays the time
+                start={
+                    'data-date-format': u'yyyy-mm-dd HH:ii P',
+                    'data-show-meridian': 'True'
+                } # changes how the DateTimeField displays the time
             )
     """
 
@@ -939,7 +943,8 @@ class BaseModelView(BaseView, ActionsMixin):
 
     def get_list_row_actions(self):
         """
-            Return list of row action objects, each is instance of :class:`~flask_admin.model.template.BaseListRowAction`
+            Return list of row action objects, each is instance of
+            :class:`~flask_admin.model.template.BaseListRowAction`
         """
         actions = []
 
@@ -2099,7 +2104,7 @@ class BaseModelView(BaseView, ActionsMixin):
         form = self.delete_form()
 
         if self.validate_form(form):
-             # id is InputRequired()
+            # id is InputRequired()
             id = form.id.data
 
             model = self.get_one(id)

flask_admin/model/filters.py

@@ -248,10 +248,10 @@ class BaseTimeBetweenFilter(BaseFilter):
     def clean(self, value):
         timetuples = [time.strptime(range, '%H:%M:%S')
                       for range in value.split(' to ')]
-        return [datetime.time(timetuple.tm_hour,
-                              timetuple.tm_min,
-                              timetuple.tm_sec)
-                              for timetuple in timetuples]
+        return [
+            datetime.time(timetuple.tm_hour, timetuple.tm_min, timetuple.tm_sec)
+            for timetuple in timetuples
+        ]
 
     def operation(self):
         return lazy_gettext('between')

flask_admin/model/helpers.py

@@ -9,6 +9,7 @@ def prettify_name(name):
     """
     return name.replace('_', ' ').title()
 
+
 def get_mdict_item_or_list(mdict, key):
     """
         Return the value for the given key of the multidict.

flask_admin/model/template.py

@@ -126,4 +126,3 @@ def macro(name):
         return m(model=model, column=column)
 
     return inner
-

flask_admin/tests/fileadmin/test_fileadmin.py

@@ -134,6 +134,7 @@ def test_file_admin():
     ok_('path=dummy_renamed_dir' not in rv.data.decode('utf-8'))
     ok_('path=dummy.txt' in rv.data.decode('utf-8'))
 
+
 def test_modal_edit():
     # bootstrap 2 - test edit_modal
     app_bs2 = Flask(__name__)

flask_admin/tests/geoa/test_basic.py

@@ -64,7 +64,8 @@ def test_model():
         "name": "test1",
         "point": '{"type": "Point", "coordinates": [125.8, 10.0]}',
         "line": '{"type": "LineString", "coordinates": [[50.2345, 94.2], [50.21, 94.87]]}',
-        "polygon": '{"type": "Polygon", "coordinates": [[[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]]]}',
+        "polygon": ('{"type": "Polygon", "coordinates": [[[100.0, 0.0], [101.0, 0.0],'
+                    ' [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]]]}'),
         "multi": '{"type": "MultiPoint", "coordinates": [[100.0, 0.0], [101.0, 1.0]]}',
     })
     eq_(rv.status_code, 302)

flask_admin/tests/mongoengine/test_basic.py

@@ -61,8 +61,8 @@ def fill_db(Model1, Model2):
     Model2('string_field_val_4', 9000, 75.5).save()
     Model2('string_field_val_5', 6169453081680413441).save()
 
-    Model1('datetime_obj1', datetime_field=datetime(2014,4,3,1,9,0)).save()
-    Model1('datetime_obj2', datetime_field=datetime(2013,3,2,0,8,0)).save()
+    Model1('datetime_obj1', datetime_field=datetime(2014, 4, 3, 1, 9, 0)).save()
+    Model1('datetime_obj2', datetime_field=datetime(2013, 3, 2, 0, 8, 0)).save()
 
 
 def test_model():
@@ -157,7 +157,7 @@ def test_column_editable_list():
     ok_('data-role="x-editable"' in data)
 
     # Form - Test basic in-line edit functionality
-    obj1 = Model1.objects.get(test1 = 'test1_val_3')
+    obj1 = Model1.objects.get(test1='test1_val_3')
     rv = client.post('/admin/model1/ajax/update/', data={
         'list_form_pk': str(obj1.id),
         'test1': 'change-success-1',
@@ -171,7 +171,7 @@ def test_column_editable_list():
     ok_('change-success-1' in data)
 
     # Test validation error
-    obj2 = Model1.objects.get(test1 = 'datetime_obj1')
+    obj2 = Model1.objects.get(test1='datetime_obj1')
     rv = client.post('/admin/model1/ajax/update/', data={
         'list_form_pk': str(obj2.id),
         'datetime_field': 'problematic-input',
@@ -198,7 +198,7 @@ def test_column_editable_list():
     view = CustomModelView(Model2, column_editable_list=['model1'])
     admin.add_view(view)
 
-    obj3 = Model2.objects.get(string_field = 'string_field_val_1')
+    obj3 = Model2.objects.get(string_field='string_field_val_1')
     rv = client.post('/admin/model2/ajax/update/', data={
         'list_form_pk': str(obj3.id),
         'model1': str(obj1.id),
@@ -283,7 +283,8 @@ def test_column_filters():
 
     eq_(len(view._filters), 7)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Test1']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Test1']],
         [
             (0, 'contains'),
             (1, 'not contains'),
@@ -292,7 +293,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # Make some test clients
     client = app.test_client()
@@ -363,7 +365,8 @@ def test_column_filters():
     view = CustomModelView(Model2, column_filters=['int_field'])
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Int Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Int Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -372,7 +375,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # integer - equals
     rv = client.get('/admin/model2/?flt0_0=5000')
@@ -469,11 +473,13 @@ def test_column_filters():
                            endpoint="_bools")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Bool Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Bool Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
-        ])
+        ]
+    )
 
     # boolean - equals - Yes
     rv = client.get('/admin/_bools/?flt0_0=1')
@@ -481,7 +487,6 @@ def test_column_filters():
     data = rv.data.decode('utf-8')
     ok_('string_field_val_1' in data)
     ok_('string_field_val_2' not in data)
-    #ok_('string_field_val_3' not in data)
 
     # boolean - equals - No
     rv = client.get('/admin/_bools/?flt0_0=0')
@@ -489,7 +494,6 @@ def test_column_filters():
     data = rv.data.decode('utf-8')
     ok_('string_field_val_1' not in data)
     ok_('string_field_val_2' in data)
-    #ok_('string_field_val_3' in data)
 
     # boolean - not equals - Yes
     rv = client.get('/admin/_bools/?flt0_1=1')
@@ -497,7 +501,6 @@ def test_column_filters():
     data = rv.data.decode('utf-8')
     ok_('string_field_val_1' not in data)
     ok_('string_field_val_2' in data)
-    #ok_('string_field_val_3' in data)
 
     # boolean - not equals - No
     rv = client.get('/admin/_bools/?flt0_1=0')
@@ -505,14 +508,14 @@ def test_column_filters():
     data = rv.data.decode('utf-8')
     ok_('string_field_val_1' in data)
     ok_('string_field_val_2' not in data)
-    #ok_('string_field_val_3' not in data)
 
     # Test float filter
     view = CustomModelView(Model2, column_filters=['float_field'],
                            endpoint="_float")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Float Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Float Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -521,7 +524,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # float - equals
     rv = client.get('/admin/_float/?flt0_0=25.9')
@@ -605,7 +609,8 @@ def test_column_filters():
                            endpoint="_datetime")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Datetime Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Datetime Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -614,7 +619,8 @@ def test_column_filters():
             (4, 'between'),
             (5, 'not between'),
             (6, 'empty'),
-        ])
+        ]
+    )
 
     # datetime - equals
     rv = client.get('/admin/_datetime/?flt0_0=2014-04-03+01%3A09%3A00')
@@ -674,6 +680,7 @@ def test_column_filters():
     ok_('datetime_obj1' in data)
     ok_('datetime_obj2' in data)
 
+
 def test_default_sort():
     app, db, admin = setup()
     M1, _ = create_models(db)
@@ -780,7 +787,7 @@ def test_subdocument_config():
     # Check only
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'subdoc': {
                 'form_columns': ('name',)
             }
@@ -796,7 +803,7 @@ def test_subdocument_config():
     # Check exclude
     view2 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'subdoc': {
                 'form_excluded_columns': ('value',)
             }
@@ -827,7 +834,7 @@ def test_subdocument_class_config():
     # Check only
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'subdoc': EmbeddedConfig()
         }
     )
@@ -855,7 +862,7 @@ def test_nested_subdocument_config():
 
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'nested': {
                 'form_subdocuments': {
                     'comment': {
@@ -885,7 +892,7 @@ def test_nested_list_subdocument():
     # Check only
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'subdoc': {
                 'form_subdocuments': {
                     None: {
@@ -918,14 +925,13 @@ def test_nested_sortedlist_subdocument():
     # Check only
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'subdoc': {
                 'form_subdocuments': {
                     None: {
                         'form_columns': ('name',)
                     }
                 }
-
             }
         }
     )
@@ -961,6 +967,7 @@ def test_sortedlist_subdocument_validation():
     eq_(rv.status_code, 200)
     ok_('This field is required' in rv.data)
 
+
 def test_list_subdocument_validation():
     app, db, admin = setup()
 
@@ -985,6 +992,7 @@ def test_list_subdocument_validation():
     eq_(rv.status_code, 200)
     ok_('This field is required' in rv.data)
 
+
 def test_ajax_fk():
     app, db, admin = setup()
 
@@ -1066,7 +1074,7 @@ def test_nested_ajax_refs():
 
     view1 = CustomModelView(
         Model1,
-        form_subdocuments = {
+        form_subdocuments={
             'nested': {
                 'form_ajax_refs': {
                     'comment': {
@@ -1127,7 +1135,7 @@ def test_form_args_embeddeddoc():
 
     view = CustomModelView(
         Model,
-        form_args= {
+        form_args={
             'info': {'label': 'Information'},
             'timestamp': {'label': 'Last Updated Time'}
         }

flask_admin/tests/peeweemodel/test_basic.py

@@ -100,12 +100,12 @@ def fill_db(Model1, Model2):
     Model2('char_field_val_4', 9000, 75.5).save()
     Model2('char_field_val_5', 6169453081680413441).save()
 
-    Model1('date_obj1', date_field=date(2014,11,17)).save()
-    Model1('date_obj2', date_field=date(2013,10,16)).save()
-    Model1('timeonly_obj1', timeonly_field=time(11,10,9)).save()
-    Model1('timeonly_obj2', timeonly_field=time(10,9,8)).save()
-    Model1('datetime_obj1', datetime_field=datetime(2014,4,3,1,9,0)).save()
-    Model1('datetime_obj2', datetime_field=datetime(2013,3,2,0,8,0)).save()
+    Model1('date_obj1', date_field=date(2014, 11, 17)).save()
+    Model1('date_obj2', date_field=date(2013, 10, 16)).save()
+    Model1('timeonly_obj1', timeonly_field=time(11, 10, 9)).save()
+    Model1('timeonly_obj2', timeonly_field=time(10, 9, 8)).save()
+    Model1('datetime_obj1', datetime_field=datetime(2014, 4, 3, 1, 9, 0)).save()
+    Model1('datetime_obj2', datetime_field=datetime(2013, 3, 2, 0, 8, 0)).save()
 
 
 def test_model():
@@ -216,7 +216,8 @@ def test_column_editable_list():
     # Test validation error
     rv = client.post('/admin/model1/ajax/update/', data={
         'list_form_pk': '1',
-        'test1': 'longerthantwentycharacterslongerthantwentycharacterslongerthantwentycharacterslongerthantwentycharacters',
+        'test1': ('longerthantwentycharacterslongerthantwentycharacterslonger'
+                  'thantwentycharacterslongerthantwentycharacters'),
     })
     data = rv.data.decode('utf-8')
     eq_(rv.status_code, 500)
@@ -320,7 +321,8 @@ def test_column_filters():
 
     eq_(len(view._filters), 7)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Test1']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Test1']],
         [
             (0, 'contains'),
             (1, 'not contains'),
@@ -329,7 +331,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # Make some test clients
     client = app.test_client()
@@ -400,7 +403,8 @@ def test_column_filters():
     view = CustomModelView(Model2, column_filters=['int_field'])
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Int Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Int Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -409,7 +413,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # integer - equals
     rv = client.get('/admin/model2/?flt0_0=5000')
@@ -506,11 +511,13 @@ def test_column_filters():
                            endpoint="_bools")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Bool Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Bool Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
-        ])
+        ]
+    )
 
     # boolean - equals - Yes
     rv = client.get('/admin/_bools/?flt0_0=1')
@@ -549,7 +556,8 @@ def test_column_filters():
                            endpoint="_float")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Float Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Float Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -558,7 +566,8 @@ def test_column_filters():
             (4, 'empty'),
             (5, 'in list'),
             (6, 'not in list'),
-        ])
+        ]
+    )
 
     # float - equals
     rv = client.get('/admin/_float/?flt0_0=25.9')
@@ -642,7 +651,8 @@ def test_column_filters():
                            endpoint="_datetime")
     admin.add_view(view)
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Date Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Date Field']],
         [
             (0, 'equals'),
             (1, 'not equal'),
@@ -651,9 +661,11 @@ def test_column_filters():
             (4, 'between'),
             (5, 'not between'),
             (6, 'empty'),
-        ])
+        ]
+    )
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Datetime Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Datetime Field']],
         [
             (7, 'equals'),
             (8, 'not equal'),
@@ -662,9 +674,11 @@ def test_column_filters():
             (11, 'between'),
             (12, 'not between'),
             (13, 'empty'),
-        ])
+        ]
+    )
 
-    eq_([(f['index'], f['operation']) for f in view._filter_groups[u'Timeonly Field']],
+    eq_(
+        [(f['index'], f['operation']) for f in view._filter_groups[u'Timeonly Field']],
         [
             (14, 'equals'),
             (15, 'not equal'),
@@ -673,7 +687,8 @@ def test_column_filters():
             (18, 'between'),
             (19, 'not between'),
             (20, 'empty'),
-        ])
+        ]
+    )
 
     # date - equals
     rv = client.get('/admin/_datetime/?flt0_0=2014-11-17')
@@ -849,6 +864,7 @@ def test_column_filters():
     ok_('timeonly_obj1' in data)
     ok_('timeonly_obj2' in data)
 
+
 def test_default_sort():
     app, db, admin = setup()
     M1, _ = create_models(db)

flask_admin/tests/sqla/__init__.py

@@ -15,6 +15,7 @@ def setup():
 
     return app, db, admin
 
+
 def setup_postgres():
     app = Flask(__name__)
     app.config['SECRET_KEY'] = '1'

flask_admin/tests/sqla/test_form_rules.py

-from nose.tools import eq_, ok_, raises
+from nose.tools import eq_, ok_
 
 from . import setup
 from .test_basic import CustomModelView, create_models

flask_admin/tests/sqla/test_inlineform.py

 # -*- coding: utf-8 -*-
-from nose.tools import eq_, ok_, raises
+from nose.tools import eq_, ok_
 
 from wtforms import fields
 
@@ -62,8 +62,8 @@ def test_inline_form():
     eq_(User.query.count(), 1)
     eq_(UserInfo.query.count(), 0)
 
-    rv = client.post('/admin/user/new/', data={'name': u'fbar', \
-                     'info-0-key': 'foo', 'info-0-val' : 'bar'})
+    data = {'name': u'fbar', 'info-0-key': 'foo', 'info-0-val': 'bar'}
+    rv = client.post('/admin/user/new/', data=data)
     eq_(rv.status_code, 302)
     eq_(User.query.count(), 2)
     eq_(UserInfo.query.count(), 1)
@@ -72,15 +72,28 @@ def test_inline_form():
     rv = client.get('/admin/user/edit/?id=2')
     eq_(rv.status_code, 200)
     # Edit - update
-    rv = client.post('/admin/user/edit/?id=2', data={'name': u'barfoo', \
-                     'info-0-id': 1, 'info-0-key': u'xxx', 'info-0-val':u'yyy'})
+    data = {
+        'name': u'barfoo',
+        'info-0-id': 1,
+        'info-0-key': u'xxx',
+        'info-0-val': u'yyy',
+    }
+    rv = client.post('/admin/user/edit/?id=2', data=data)
     eq_(UserInfo.query.count(), 1)
     eq_(UserInfo.query.one().key, u'xxx')
 
     # Edit - add & delete
-    rv = client.post('/admin/user/edit/?id=2', data={'name': u'barf', \
-                     'del-info-0': 'on', 'info-0-id': '1', 'info-0-key': 'yyy', 'info-0-val': 'xxx',
-                     'info-1-id': None, 'info-1-key': u'bar', 'info-1-val' : u'foo'})
+    data = {
+        'name': u'barf',
+        'del-info-0': 'on',
+        'info-0-id': '1',
+        'info-0-key': 'yyy',
+        'info-0-val': 'xxx',
+        'info-1-id': None,
+        'info-1-key': u'bar',
+        'info-1-val': u'foo',
+    }
+    rv = client.post('/admin/user/edit/?id=2', data=data)
     eq_(rv.status_code, 302)
     eq_(User.query.count(), 2)
     eq_(User.query.get(2).name, u'barf')
@@ -259,7 +272,7 @@ def test_inline_form_base_class():
 
     # Set up Admin
     class UserModelView(ModelView):
-        inline_models = ((UserEmail,{"form_base_class": StubBaseForm}),)
+        inline_models = ((UserEmail, {"form_base_class": StubBaseForm}),)
         form_args = {
             "emails": {"validators": [ItemsRequired()]}
         }

flask_admin/tests/test_base.py

@@ -342,7 +342,7 @@ def test_multi_instances_init():
     class ManageIndex(base.AdminIndexView):
         pass
 
-    _ = base.Admin(app, index_view=ManageIndex(url='/manage', endpoint='manage'))
+    _ = base.Admin(app, index_view=ManageIndex(url='/manage', endpoint='manage'))  # noqa: F841
 
 
 @raises(Exception)

flask_admin/tests/test_form_upload.py

@@ -229,7 +229,6 @@ def test_image_upload_field():
             eq_(dummy.upload, 'test1.jpg')
             ok_(op.exists(op.join(path, 'test1.jpg')))
 
-
     # check allowed extensions
     for extension in ('gif', 'jpg', 'jpeg', 'png', 'tiff'):
         filename = 'copyleft.' + extension

flask_admin/tests/test_model.py

@@ -579,7 +579,7 @@ def test_export_csv():
     # test explicit use of column_export_list
     view = MockModelView(Model, view_data, can_export=True,
                          column_list=['col1', 'col2'],
-                         column_export_list=['id','col1','col2'],
+                         column_export_list=['id', 'col1', 'col2'],
                          endpoint='exportinclusion')
     admin.add_view(view)
 
@@ -629,7 +629,7 @@ def test_export_csv():
     view = MockModelView(
         Model, view_data, can_export=True, column_list=['col1', 'col2'],
         column_labels={'col1': 'Str Field', 'col2': 'Int Field'},
-        column_formatters=dict(col2=lambda v, c, m, p: m.col2*2),
+        column_formatters=dict(col2=lambda v, c, m, p: m.col2 * 2),
         endpoint="types_and_formatters"
     )
     admin.add_view(view)
@@ -647,8 +647,8 @@ def test_export_csv():
 
     view = MockModelView(
         Model, view_data, can_export=True, column_list=['col1', 'col2'],
-        column_formatters_export=dict(col2=lambda v, c, m, p: m.col2*3),
-        column_formatters=dict(col2=lambda v, c, m, p: m.col2*2),  # overridden
+        column_formatters_export=dict(col2=lambda v, c, m, p: m.col2 * 3),
+        column_formatters=dict(col2=lambda v, c, m, p: m.col2 * 2),  # overridden
         column_type_formatters_export=type_formatters,
         endpoint="export_types_and_formatters"
     )

flask_admin/tools.py

@@ -119,6 +119,7 @@ def iterencode(iter):
                     .replace(CHAR_SEPARATOR, CHAR_ESCAPE + CHAR_SEPARATOR)
                     for v in iter)
 
+
 def iterdecode(value):
     """
         Decode enumerable from string presentation as a tuple