bpo-34871: inspect: Don't pollute sys.modules (GH-9696)

https://bugs.python.org/issue34871
2018-10-05 01:47:09 +09:00 · 2018-10-05 01:47:09 +09:00 · 6f85b826b5
parent c57eb9a336
commit 6f85b826b5
2 changed files with 3 additions and 1 deletions
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@ -1988,7 +1988,7 @@ def _signature_fromstr(cls, obj, s, skip_bound_arg=True):
        module = sys.modules.get(module_name, None)
        if module:
            module_dict = module.__dict__
-    sys_module_dict = sys.modules
+    sys_module_dict = sys.modules.copy()

    def parse_name(node):
        assert isinstance(node, ast.arg)
--- a/Misc/NEWS.d/next/Library/2018-10-04-18-46-54.bpo-34871.t3X-dB.rst
+++ b/Misc/NEWS.d/next/Library/2018-10-04-18-46-54.bpo-34871.t3X-dB.rst
@ -0,0 +1,2 @@
+Fix inspect module polluted ``sys.modules`` when parsing
+``__text_signature__`` of callable.