Add csv.__version__ (#7357)

stdlib/_csv.pyi

@@ -1,6 +1,8 @@
 from typing import Any, Iterable, Iterator, Protocol, Union
 from typing_extensions import Literal
 
+__version__: str
+
 QUOTE_ALL: Literal[1]
 QUOTE_MINIMAL: Literal[0]
 QUOTE_NONE: Literal[3]

stdlib/csv.pyi

@@ -6,6 +6,7 @@ from _csv import (
     QUOTE_NONNUMERIC as QUOTE_NONNUMERIC,
     Dialect as Dialect,
     Error as Error,
+    __version__ as __version__,
     _DialectLike,
     _reader,
     _writer,

tests/stubtest_allowlists/py3_common.txt

@@ -65,7 +65,6 @@ configparser.SectionProxy.getboolean
 configparser.SectionProxy.getfloat
 configparser.SectionProxy.getint
 copy.PyStringMap  # defined only in Jython
-csv.__version__  # Always "1.0". Using this is likely a bug. #6398
 # The Dialect properties are initialized as None in Dialect but their values are enforced in _Dialect
 csv.Dialect.delimiter
 csv.Dialect.doublequote