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-rw-r--r--Lib/typing.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/typing.py b/Lib/typing.py
index 8c61bd8..4cf33c1 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -18,6 +18,7 @@ At large scale, the structure of the module is following:
"""
from abc import abstractmethod, ABCMeta
+import ast
import collections
import collections.abc
import contextlib
@@ -469,6 +470,13 @@ class ForwardRef(_Final, _root=True):
def __init__(self, arg, is_argument=True):
if not isinstance(arg, str):
raise TypeError(f"Forward reference must be a string -- got {arg!r}")
+
+ # Double-stringified forward references is a result of activating
+ # the 'annotations' future by default. This way, we eliminate them in
+ # the runtime.
+ if arg.startswith(("'", '\"')) and arg.endswith(("'", '"')):
+ arg = arg[1:-1]
+
try:
code = compile(arg, '<string>', 'eval')
except SyntaxError: