Removed unneeded __init__() methods.

9 files changed, 21 insertions, 48 deletions

diff --git a/django/contrib/auth/base_user.py b/django/contrib/auth/base_user.py
index 8865b671c9..0f8d5d87e2 100644
--- a/django/contrib/auth/base_user.py
+++ b/django/contrib/auth/base_user.py
@@ -52,6 +52,10 @@ class AbstractBaseUser(models.Model):
 
     REQUIRED_FIELDS = []
 
+    # Stores the raw password if set_password() is called so that it can
+    # be passed to password_changed() after the model is saved.
+    _password = None
+
     class Meta:
         abstract = True
 
@@ -59,12 +63,6 @@ class AbstractBaseUser(models.Model):
         "Return the identifying username for this User"
         return getattr(self, self.USERNAME_FIELD)
 
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        # Stores the raw password if set_password() is called so that it can
-        # be passed to password_changed() after the model is saved.
-        self._password = None
-
     def __str__(self):
         return self.get_username()
 
diff --git a/django/contrib/auth/models.py b/django/contrib/auth/models.py
index d931277c66..3ad2e84e17 100644
--- a/django/contrib/auth/models.py
+++ b/django/contrib/auth/models.py
@@ -374,9 +374,6 @@ class AnonymousUser:
     _groups = EmptyManager(Group)
     _user_permissions = EmptyManager(Permission)
 
-    def __init__(self):
-        pass
-
     def __str__(self):
         return 'AnonymousUser'
 
diff --git a/django/contrib/gis/db/backends/postgis/operations.py b/django/contrib/gis/db/backends/postgis/operations.py
index 85e1f35fe1..a535b49849 100644
--- a/django/contrib/gis/db/backends/postgis/operations.py
+++ b/django/contrib/gis/db/backends/postgis/operations.py
@@ -103,6 +103,14 @@ class PostGISOperations(BaseSpatialOperations, DatabaseOperations):
 
     Adapter = PostGISAdapter
 
+    collect = geom_func_prefix + 'Collect'
+    extent = geom_func_prefix + 'Extent'
+    extent3d = geom_func_prefix + '3DExtent'
+    length3d = geom_func_prefix + '3DLength'
+    makeline = geom_func_prefix + 'MakeLine'
+    perimeter3d = geom_func_prefix + '3DPerimeter'
+    unionagg = geom_func_prefix + 'Union'
+
     gis_operators = {
         'bbcontains': PostGISOperator(op='~', raster=True),
         'bboverlaps': PostGISOperator(op='&&', geography=True, raster=True),
@@ -137,19 +145,6 @@ class PostGISOperations(BaseSpatialOperations, DatabaseOperations):
     select = '%s::bytea'
     select_extent = None
 
-    def __init__(self, connection):
-        super().__init__(connection)
-
-        prefix = self.geom_func_prefix
-
-        self.collect = prefix + 'Collect'
-        self.extent = prefix + 'Extent'
-        self.extent3d = prefix + '3DExtent'
-        self.length3d = prefix + '3DLength'
-        self.makeline = prefix + 'MakeLine'
-        self.perimeter3d = prefix + '3DPerimeter'
-        self.unionagg = prefix + 'Union'
-
     @cached_property
     def function_names(self):
         function_names = {
diff --git a/django/core/files/uploadhandler.py b/django/core/files/uploadhandler.py
index 5e993d13e2..a0f34b741c 100644
--- a/django/core/files/uploadhandler.py
+++ b/django/core/files/uploadhandler.py
@@ -132,9 +132,6 @@ class TemporaryFileUploadHandler(FileUploadHandler):
     """
     Upload handler that streams data into a temporary file.
     """
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-
     def new_file(self, *args, **kwargs):
         """
         Create the file object to append to as data is coming in.
diff --git a/django/core/handlers/base.py b/django/core/handlers/base.py
index 9b79439569..80cc8b3281 100644
--- a/django/core/handlers/base.py
+++ b/django/core/handlers/base.py
@@ -13,14 +13,12 @@ logger = logging.getLogger('django.request')
 
 
 class BaseHandler:
-
-    def __init__(self):
-        self._request_middleware = None
-        self._view_middleware = None
-        self._template_response_middleware = None
-        self._response_middleware = None
-        self._exception_middleware = None
-        self._middleware_chain = None
+    _request_middleware = None
+    _view_middleware = None
+    _template_response_middleware = None
+    _response_middleware = None
+    _exception_middleware = None
+    _middleware_chain = None
 
     def load_middleware(self):
         """
diff --git a/django/core/management/commands/test.py b/django/core/management/commands/test.py
index 21d763c33e..4e4016ed06 100644
--- a/django/core/management/commands/test.py
+++ b/django/core/management/commands/test.py
@@ -10,10 +10,7 @@ class Command(BaseCommand):
 
     # DiscoverRunner runs the checks after databases are set up.
     requires_system_checks = False
-
-    def __init__(self):
-        self.test_runner = None
-        super().__init__()
+    test_runner = None
 
     def run_from_argv(self, argv):
         """
diff --git a/django/db/backends/oracle/operations.py b/django/db/backends/oracle/operations.py
index bf54755c5e..4377bd59ec 100644
--- a/django/db/backends/oracle/operations.py
+++ b/django/db/backends/oracle/operations.py
@@ -23,6 +23,7 @@ class DatabaseOperations(BaseDatabaseOperations):
         'PositiveSmallIntegerField': (0, 99999999999),
         'PositiveIntegerField': (0, 99999999999),
     }
+    set_operators = dict(BaseDatabaseOperations.set_operators, difference='MINUS')
 
     # TODO: colorize this SQL code with style.SQL_KEYWORD(), etc.
     _sequence_reset_sql = """
@@ -52,10 +53,6 @@ END;
     # Oracle doesn't support string without precision; use the max string size.
     cast_char_field_without_max_length = 'NVARCHAR2(2000)'
 
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.set_operators['difference'] = 'MINUS'
-
     def cache_key_culling_sql(self):
         return """
             SELECT cache_key
diff --git a/django/db/models/functions/base.py b/django/db/models/functions/base.py
index 378a9504d2..e1d7938eac 100644
--- a/django/db/models/functions/base.py
+++ b/django/db/models/functions/base.py
@@ -52,9 +52,6 @@ class ConcatPair(Func):
     """
     function = 'CONCAT'
 
-    def __init__(self, left, right, **extra):
-        super().__init__(left, right, **extra)
-
     def as_sqlite(self, compiler, connection):
         coalesced = self.coalesce()
         return super(ConcatPair, coalesced).as_sql(
diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 743803338b..37f5cce37a 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -1056,10 +1056,7 @@ class SQLCompiler:
 
 
 class SQLInsertCompiler(SQLCompiler):
-
-    def __init__(self, *args, **kwargs):
-        self.return_id = False
-        super().__init__(*args, **kwargs)
+    return_id = False
 
     def field_as_sql(self, field, val):
         """