Refs #33476 -- Reformatted code with Black.

1 files changed, 67 insertions, 65 deletions

diff --git a/django/contrib/postgres/constraints.py b/django/contrib/postgres/constraints.py
index 06ccd3616e..c0bc0c444f 100644
--- a/django/contrib/postgres/constraints.py
+++ b/django/contrib/postgres/constraints.py
@@ -10,71 +10,69 @@ from django.db.models.indexes import IndexExpression
 from django.db.models.sql import Query
 from django.utils.deprecation import RemovedInDjango50Warning
 
-__all__ = ['ExclusionConstraint']
+__all__ = ["ExclusionConstraint"]
 
 
 class ExclusionConstraintExpression(IndexExpression):
-    template = '%(expressions)s WITH %(operator)s'
+    template = "%(expressions)s WITH %(operator)s"
 
 
 class ExclusionConstraint(BaseConstraint):
-    template = 'CONSTRAINT %(name)s EXCLUDE USING %(index_type)s (%(expressions)s)%(include)s%(where)s%(deferrable)s'
+    template = "CONSTRAINT %(name)s EXCLUDE USING %(index_type)s (%(expressions)s)%(include)s%(where)s%(deferrable)s"
 
     def __init__(
-        self, *, name, expressions, index_type=None, condition=None,
-        deferrable=None, include=None, opclasses=(),
+        self,
+        *,
+        name,
+        expressions,
+        index_type=None,
+        condition=None,
+        deferrable=None,
+        include=None,
+        opclasses=(),
     ):
-        if index_type and index_type.lower() not in {'gist', 'spgist'}:
+        if index_type and index_type.lower() not in {"gist", "spgist"}:
             raise ValueError(
-                'Exclusion constraints only support GiST or SP-GiST indexes.'
+                "Exclusion constraints only support GiST or SP-GiST indexes."
             )
         if not expressions:
             raise ValueError(
-                'At least one expression is required to define an exclusion '
-                'constraint.'
+                "At least one expression is required to define an exclusion "
+                "constraint."
             )
         if not all(
-            isinstance(expr, (list, tuple)) and len(expr) == 2
-            for expr in expressions
+            isinstance(expr, (list, tuple)) and len(expr) == 2 for expr in expressions
         ):
-            raise ValueError('The expressions must be a list of 2-tuples.')
+            raise ValueError("The expressions must be a list of 2-tuples.")
         if not isinstance(condition, (type(None), Q)):
-            raise ValueError(
-                'ExclusionConstraint.condition must be a Q instance.'
-            )
+            raise ValueError("ExclusionConstraint.condition must be a Q instance.")
         if condition and deferrable:
-            raise ValueError(
-                'ExclusionConstraint with conditions cannot be deferred.'
-            )
+            raise ValueError("ExclusionConstraint with conditions cannot be deferred.")
         if not isinstance(deferrable, (type(None), Deferrable)):
             raise ValueError(
-                'ExclusionConstraint.deferrable must be a Deferrable instance.'
+                "ExclusionConstraint.deferrable must be a Deferrable instance."
             )
         if not isinstance(include, (type(None), list, tuple)):
-            raise ValueError(
-                'ExclusionConstraint.include must be a list or tuple.'
-            )
+            raise ValueError("ExclusionConstraint.include must be a list or tuple.")
         if not isinstance(opclasses, (list, tuple)):
-            raise ValueError(
-                'ExclusionConstraint.opclasses must be a list or tuple.'
-            )
+            raise ValueError("ExclusionConstraint.opclasses must be a list or tuple.")
         if opclasses and len(expressions) != len(opclasses):
             raise ValueError(
-                'ExclusionConstraint.expressions and '
-                'ExclusionConstraint.opclasses must have the same number of '
-                'elements.'
+                "ExclusionConstraint.expressions and "
+                "ExclusionConstraint.opclasses must have the same number of "
+                "elements."
             )
         self.expressions = expressions
-        self.index_type = index_type or 'GIST'
+        self.index_type = index_type or "GIST"
         self.condition = condition
         self.deferrable = deferrable
         self.include = tuple(include) if include else ()
         self.opclasses = opclasses
         if self.opclasses:
             warnings.warn(
-                'The opclasses argument is deprecated in favor of using '
-                'django.contrib.postgres.indexes.OpClass in '
-                'ExclusionConstraint.expressions.',
+                "The opclasses argument is deprecated in favor of using "
+                "django.contrib.postgres.indexes.OpClass in "
+                "ExclusionConstraint.expressions.",
                 category=RemovedInDjango50Warning,
                 stacklevel=2,
             )
@@ -107,14 +105,18 @@ class ExclusionConstraint(BaseConstraint):
         expressions = self._get_expressions(schema_editor, query)
         table = model._meta.db_table
         condition = self._get_condition_sql(compiler, schema_editor, query)
-        include = [model._meta.get_field(field_name).column for field_name in self.include]
+        include = [
+            model._meta.get_field(field_name).column for field_name in self.include
+        ]
         return Statement(
             self.template,
             table=Table(table, schema_editor.quote_name),
             name=schema_editor.quote_name(self.name),
             index_type=self.index_type,
-            expressions=Expressions(table, expressions, compiler, schema_editor.quote_value),
-            where=' WHERE (%s)' % condition if condition else '',
+            expressions=Expressions(
+                table, expressions, compiler, schema_editor.quote_value
+            ),
+            where=" WHERE (%s)" % condition if condition else "",
             include=schema_editor._index_include_sql(model, include),
             deferrable=schema_editor._deferrable_constraint_sql(self.deferrable),
         )
@@ -122,7 +124,7 @@ class ExclusionConstraint(BaseConstraint):
     def create_sql(self, model, schema_editor):
         self.check_supported(schema_editor)
         return Statement(
-            'ALTER TABLE %(table)s ADD %(constraint)s',
+            "ALTER TABLE %(table)s ADD %(constraint)s",
             table=Table(model._meta.db_table, schema_editor.quote_name),
             constraint=self.constraint_sql(model, schema_editor),
         )
@@ -136,60 +138,60 @@ class ExclusionConstraint(BaseConstraint):
 
     def check_supported(self, schema_editor):
         if (
-            self.include and
-            self.index_type.lower() == 'gist' and
-            not schema_editor.connection.features.supports_covering_gist_indexes
+            self.include
+            and self.index_type.lower() == "gist"
+            and not schema_editor.connection.features.supports_covering_gist_indexes
         ):
             raise NotSupportedError(
-                'Covering exclusion constraints using a GiST index require '
-                'PostgreSQL 12+.'
+                "Covering exclusion constraints using a GiST index require "
+                "PostgreSQL 12+."
             )
         if (
-            self.include and
-            self.index_type.lower() == 'spgist' and
-            not schema_editor.connection.features.supports_covering_spgist_indexes
+            self.include
+            and self.index_type.lower() == "spgist"
+            and not schema_editor.connection.features.supports_covering_spgist_indexes
         ):
             raise NotSupportedError(
-                'Covering exclusion constraints using an SP-GiST index '
-                'require PostgreSQL 14+.'
+                "Covering exclusion constraints using an SP-GiST index "
+                "require PostgreSQL 14+."
             )
 
     def deconstruct(self):
         path, args, kwargs = super().deconstruct()
-        kwargs['expressions'] = self.expressions
+        kwargs["expressions"] = self.expressions
         if self.condition is not None:
-            kwargs['condition'] = self.condition
-        if self.index_type.lower() != 'gist':
-            kwargs['index_type'] = self.index_type
+            kwargs["condition"] = self.condition
+        if self.index_type.lower() != "gist":
+            kwargs["index_type"] = self.index_type
         if self.deferrable:
-            kwargs['deferrable'] = self.deferrable
+            kwargs["deferrable"] = self.deferrable
         if self.include:
-            kwargs['include'] = self.include
+            kwargs["include"] = self.include
         if self.opclasses:
-            kwargs['opclasses'] = self.opclasses
+            kwargs["opclasses"] = self.opclasses
         return path, args, kwargs
 
     def __eq__(self, other):
         if isinstance(other, self.__class__):
             return (
-                self.name == other.name and
-                self.index_type == other.index_type and
-                self.expressions == other.expressions and
-                self.condition == other.condition and
-                self.deferrable == other.deferrable and
-                self.include == other.include and
-                self.opclasses == other.opclasses
+                self.name == other.name
+                and self.index_type == other.index_type
+                and self.expressions == other.expressions
+                and self.condition == other.condition
+                and self.deferrable == other.deferrable
+                and self.include == other.include
+                and self.opclasses == other.opclasses
             )
         return super().__eq__(other)
 
     def __repr__(self):
-        return '<%s: index_type=%s expressions=%s name=%s%s%s%s%s>' % (
+        return "<%s: index_type=%s expressions=%s name=%s%s%s%s%s>" % (
             self.__class__.__qualname__,
             repr(self.index_type),
             repr(self.expressions),
             repr(self.name),
-            '' if self.condition is None else ' condition=%s' % self.condition,
-            '' if self.deferrable is None else ' deferrable=%r' % self.deferrable,
-            '' if not self.include else ' include=%s' % repr(self.include),
-            '' if not self.opclasses else ' opclasses=%s' % repr(self.opclasses),
+            "" if self.condition is None else " condition=%s" % self.condition,
+            "" if self.deferrable is None else " deferrable=%r" % self.deferrable,
+            "" if not self.include else " include=%s" % repr(self.include),
+            "" if not self.opclasses else " opclasses=%s" % repr(self.opclasses),
         )