Refs #28909 -- Simplifed code using unpacking generalizations.

django/db/backends/base/schema.py

@@ -865,8 +865,7 @@ class BaseDatabaseSchemaEditor:
         and a unique digest and suffix.
         """
         _, table_name = split_identifier(table_name)
-        hash_data = [table_name] + list(column_names)
+        hash_suffix_part = '%s%s' % (self._digest(table_name, *column_names), suffix)
-        hash_suffix_part = '%s%s' % (self._digest(*hash_data), suffix)
         max_length = self.connection.ops.max_name_length() or 200
         # If everything fits into max_length, use that name.
         index_name = '%s_%s_%s' % (table_name, '_'.join(column_names), hash_suffix_part)

django/db/backends/mysql/introspection.py

@@ -85,22 +85,17 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
 
         fields = []
         for line in cursor.description:
-            col_name = line[0]
+            info = field_info[line[0]]
-            fields.append(
+            fields.append(FieldInfo(
-                FieldInfo(*(
+                *line[:3],
-                    (col_name,) +
+                to_int(info.max_len) or line[3],
-                    line[1:3] +
+                to_int(info.num_prec) or line[4],
-                    (
+                to_int(info.num_scale) or line[5],
-                        to_int(field_info[col_name].max_len) or line[3],
-                        to_int(field_info[col_name].num_prec) or line[4],
-                        to_int(field_info[col_name].num_scale) or line[5],
                 line[6],
-                        field_info[col_name].column_default,
+                info.column_default,
-                        field_info[col_name].extra,
+                info.extra,
-                        field_info[col_name].is_unsigned,
+                info.is_unsigned,
-                    )
             ))
-            )
         return fields
 
     def get_sequences(self, cursor, table_name, table_fields=()):

django/db/backends/oracle/introspection.py

@@ -84,13 +84,10 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
             name = desc[0]
             internal_size, default, is_autofield = field_map[name]
             name = name % {}  # cx_Oracle, for some reason, doubles percent signs.
-            description.append(FieldInfo(*(
+            description.append(FieldInfo(
-                (name.lower(),) +
+                name.lower(), *desc[1:3], internal_size, desc[4] or 0,
-                desc[1:3] +
+                desc[5] or 0, *desc[6:], default, is_autofield,
-                (internal_size, desc[4] or 0, desc[5] or 0) +
+            ))
-                desc[6:] +
-                (default, is_autofield)
-            )))
         return description
 
     def table_name_converter(self, name):

django/db/backends/postgresql/introspection.py

@@ -75,7 +75,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
         field_map = {line[0]: line[1:] for line in cursor.fetchall()}
         cursor.execute("SELECT * FROM %s LIMIT 1" % self.connection.ops.quote_name(table_name))
         return [
-            FieldInfo(*(line[0:6] + (field_map[line.name][0] == 'YES', field_map[line.name][1])))
+            FieldInfo(*line[0:6], field_map[line.name][0] == 'YES', field_map[line.name][1])
             for line in cursor.description
         ]
 

django/test/testcases.py

@@ -1056,7 +1056,7 @@ class CheckCondition:
         self.conditions = conditions
 
     def add_condition(self, condition, reason):
-        return self.__class__(*self.conditions + ((condition, reason),))
+        return self.__class__(*self.conditions, (condition, reason))
 
     def __get__(self, instance, cls=None):
         # Trigger access for all bases.

django/utils/functional.py

@@ -9,7 +9,7 @@ from functools import total_ordering, wraps
 # CPython) is a type and its instances don't bind.
 def curry(_curried_func, *args, **kwargs):
     def _curried(*moreargs, **morekwargs):
-        return _curried_func(*(args + moreargs), **{**kwargs, **morekwargs})
+        return _curried_func(*args, *moreargs, **{**kwargs, **morekwargs})
     return _curried