Fixed typos in docs, comments, and exception messages.

13 files changed, 22 insertions, 21 deletions

diff --git a/django/core/management/commands/dumpdata.py b/django/core/management/commands/dumpdata.py
index ce936c5459..2968f74805 100644
--- a/django/core/management/commands/dumpdata.py
+++ b/django/core/management/commands/dumpdata.py
@@ -110,7 +110,7 @@ class Command(BaseCommand):
 
                     app_list_value = app_list.setdefault(app_config, [])
 
-                    # We may have previously seen a "all-models" request for
+                    # We may have previously seen an "all-models" request for
                     # this app (no model qualifier was given). In this case
                     # there is no need adding specific models to the list.
                     if app_list_value is not None:
diff --git a/django/core/serializers/base.py b/django/core/serializers/base.py
index a9c6dbf1dc..4fa95f6f6e 100644
--- a/django/core/serializers/base.py
+++ b/django/core/serializers/base.py
@@ -146,19 +146,19 @@ class Serializer:
         """
         Called to handle each individual (non-relational) field on an object.
         """
-        raise NotImplementedError('subclasses of Serializer must provide an handle_field() method')
+        raise NotImplementedError('subclasses of Serializer must provide a handle_field() method')
 
     def handle_fk_field(self, obj, field):
         """
         Called to handle a ForeignKey field.
         """
-        raise NotImplementedError('subclasses of Serializer must provide an handle_fk_field() method')
+        raise NotImplementedError('subclasses of Serializer must provide a handle_fk_field() method')
 
     def handle_m2m_field(self, obj, field):
         """
         Called to handle a ManyToManyField.
         """
-        raise NotImplementedError('subclasses of Serializer must provide an handle_m2m_field() method')
+        raise NotImplementedError('subclasses of Serializer must provide a handle_m2m_field() method')
 
     def getvalue(self):
         """
diff --git a/django/db/backends/base/operations.py b/django/db/backends/base/operations.py
index 892527873a..b7e35760cb 100644
--- a/django/db/backends/base/operations.py
+++ b/django/db/backends/base/operations.py
@@ -394,7 +394,7 @@ class BaseDatabaseOperations:
         to tables with foreign keys pointing the tables being truncated.
         PostgreSQL requires a cascade even if these tables are empty.
         """
-        raise NotImplementedError('subclasses of BaseDatabaseOperations must provide an sql_flush() method')
+        raise NotImplementedError('subclasses of BaseDatabaseOperations must provide a sql_flush() method')
 
     def execute_sql_flush(self, using, sql_list):
         """Execute a list of SQL statements to flush the database."""
diff --git a/django/db/migrations/operations/utils.py b/django/db/migrations/operations/utils.py
index 34fdaba821..adb2a7febb 100644
--- a/django/db/migrations/operations/utils.py
+++ b/django/db/migrations/operations/utils.py
@@ -18,7 +18,7 @@ class ModelTuple(namedtuple('ModelTupleBase', ('app_label', 'model_name'))):
     @classmethod
     def from_model(cls, model, app_label=None, model_name=None):
         """
-        Take a model class or a 'app_label.ModelName' string and return a
+        Take a model class or an 'app_label.ModelName' string and return a
         ModelTuple('app_label', 'modelname'). The optional app_label and
         model_name arguments are the defaults if "self" or "ModelName" are
         passed.
diff --git a/django/db/models/base.py b/django/db/models/base.py
index f2560117d2..0a1120322e 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -727,7 +727,7 @@ class Model(metaclass=ModelBase):
                                  % ', '.join(non_model_fields))
 
         # If saving to the same database, and this model is deferred, then
-        # automatically do a "update_fields" save on the loaded fields.
+        # automatically do an "update_fields" save on the loaded fields.
         elif not force_insert and deferred_fields and using == self._state.db:
             field_names = set()
             for field in self._meta.concrete_fields:
diff --git a/django/forms/forms.py b/django/forms/forms.py
index 3898419ab2..0ab25643da 100644
--- a/django/forms/forms.py
+++ b/django/forms/forms.py
@@ -189,7 +189,7 @@ class BaseForm:
         return '%s-%s' % (self.prefix, field_name) if self.prefix else field_name
 
     def add_initial_prefix(self, field_name):
-        """Add a 'initial' prefix for checking dynamic initial values."""
+        """Add an 'initial' prefix for checking dynamic initial values."""
         return 'initial-%s' % self.add_prefix(field_name)
 
     def _html_output(self, normal_row, error_row, row_ender, help_text_html, errors_on_separate_row):
diff --git a/docs/ref/contrib/gis/gdal.txt b/docs/ref/contrib/gis/gdal.txt
index c1860a204d..6dde659e2d 100644
--- a/docs/ref/contrib/gis/gdal.txt
+++ b/docs/ref/contrib/gis/gdal.txt
@@ -1172,9 +1172,9 @@ blue.
 
         The name of the GDAL driver used to handle the input file. For ``GDALRaster``\s created
         from a file, the driver type is detected automatically. The creation of rasters from
-        scratch is a in-memory raster by default (``'MEM'``), but can be altered as
-        needed. For instance, use ``GTiff`` for a ``GeoTiff`` file. For a list of file types,
-        see also the `GDAL Raster Formats`__ list.
+        scratch is an in-memory raster by default (``'MEM'``), but can be
+        altered as needed. For instance, use ``GTiff`` for a ``GeoTiff`` file.
+        For a list of file types, see also the `GDAL Raster Formats`__ list.
 
         __ https://www.gdal.org/formats_list.html
 
@@ -1271,9 +1271,9 @@ blue.
 
     .. attribute:: scale
 
-        Pixel width and height used for georeferencing the raster, as a as a
-        point object with ``x`` and ``y``  members. See :attr:`geotransform`
-        for more information.
+        Pixel width and height used for georeferencing the raster, as a point
+        object with ``x`` and ``y``  members. See :attr:`geotransform` for more
+        information.
 
             >>> rst = GDALRaster({'width': 10, 'height': 20, 'srid': 4326})
             >>> rst.scale
diff --git a/docs/ref/models/lookups.txt b/docs/ref/models/lookups.txt
index c0e97e9fe6..aae5ba96c4 100644
--- a/docs/ref/models/lookups.txt
+++ b/docs/ref/models/lookups.txt
@@ -132,7 +132,7 @@ following methods:
     prominent example is ``__year`` that transforms a ``DateField`` into a
     ``IntegerField``.
 
-    The notation to use a ``Transform`` in an lookup expression is
+    The notation to use a ``Transform`` in a lookup expression is
     ``<expression>__<transformation>`` (e.g. ``date__year``).
 
     This class follows the :ref:`Query Expression API <query-expression>`, which
diff --git a/docs/ref/models/querysets.txt b/docs/ref/models/querysets.txt
index 8485d436e1..6428576cbc 100644
--- a/docs/ref/models/querysets.txt
+++ b/docs/ref/models/querysets.txt
@@ -1737,7 +1737,8 @@ raised if ``select_for_update()`` is used in autocommit mode.
 
 Takes a raw SQL query, executes it, and returns a
 ``django.db.models.query.RawQuerySet`` instance. This ``RawQuerySet`` instance
-can be iterated over just like an normal ``QuerySet`` to provide object instances.
+can be iterated over just like a normal ``QuerySet`` to provide object
+instances.
 
 See the :doc:`/topics/db/sql` for more information.
 
diff --git a/docs/ref/templates/api.txt b/docs/ref/templates/api.txt
index 86ef097749..dbd8324ba2 100644
--- a/docs/ref/templates/api.txt
+++ b/docs/ref/templates/api.txt
@@ -628,7 +628,7 @@ below.
 
 Also, you can give :class:`RequestContext` a list of additional processors,
 using the optional, third positional argument, ``processors``. In this
-example, the :class:`RequestContext` instance gets a ``ip_address`` variable::
+example, the :class:`RequestContext` instance gets an ``ip_address`` variable::
 
     from django.http import HttpResponse
     from django.template import RequestContext, Template
diff --git a/docs/releases/1.0-porting-guide.txt b/docs/releases/1.0-porting-guide.txt
index 7f96f5e80f..8ea7945ad3 100644
--- a/docs/releases/1.0-porting-guide.txt
+++ b/docs/releases/1.0-porting-guide.txt
@@ -134,7 +134,7 @@ extensibility and customization in mind.
 
 Practically, this means you'll need to rewrite all of your ``class Admin``
 declarations. You've already seen in `models`_ above how to replace your ``class
-Admin`` with a ``admin.site.register()`` call in an ``admin.py`` file. Below are
+Admin`` with an ``admin.site.register()`` call in an ``admin.py`` file. Below are
 some more details on how to rewrite that ``Admin`` declaration into the new
 syntax.
 
diff --git a/docs/releases/1.4.txt b/docs/releases/1.4.txt
index 8bf30b77e5..ccee3df153 100644
--- a/docs/releases/1.4.txt
+++ b/docs/releases/1.4.txt
@@ -699,7 +699,7 @@ are configured and your Web server serves those files correctly. The
 development server continues to serve the admin files just like before. Read
 the :doc:`static files howto </howto/static-files/index>` for more details.
 
-If your ``ADMIN_MEDIA_PREFIX`` is set to an specific domain (e.g.
+If your ``ADMIN_MEDIA_PREFIX`` is set to a specific domain (e.g.
 ``http://media.example.com/admin/``), make sure to also set your
 :setting:`STATIC_URL` setting to the correct URL -- for example,
 ``http://media.example.com/``.
@@ -783,7 +783,7 @@ time you need to run Django 1.3 for the data to expire or become irrelevant.
 
   * Time period: Defined by :setting:`PASSWORD_RESET_TIMEOUT_DAYS`.
 
-Form-related hashes: these have a are much shorter lifetime and are relevant
+Form-related hashes: these have a much shorter lifetime and are relevant
 only for the short window where a user might fill in a form generated by the
 pre-upgrade Django instance and try to submit it to the upgraded Django
 instance:
diff --git a/tests/backends/base/test_operations.py b/tests/backends/base/test_operations.py
index 607afb6dfc..021043a834 100644
--- a/tests/backends/base/test_operations.py
+++ b/tests/backends/base/test_operations.py
@@ -37,7 +37,7 @@ class SimpleDatabaseOperationTests(SimpleTestCase):
         self.assertEqual(self.ops.set_time_zone_sql(), '')
 
     def test_sql_flush(self):
-        msg = 'subclasses of BaseDatabaseOperations must provide an sql_flush() method'
+        msg = 'subclasses of BaseDatabaseOperations must provide a sql_flush() method'
         with self.assertRaisesMessage(NotImplementedError, msg):
             self.ops.sql_flush(None, None, None)