STINNER Victor <vstin...@python.org> added the comment:
Attached func_builtins2.py mimicks the cloudpicke bug:
---
def func(s): return len(s)
code = func.__code__
FuncType = type(func)
func2_globals = {}
func2 = FuncType(code, func2_globals)
# func2.func_builtins = {'None': None}
func2.__globals__['__builtins__'] = __builtins__
# frame created with {'None': None} builtins: "len" key is missing
func2("abc")
---
In Python 3.10, setting func2.__globals__['__builtins__'] has no longer an
impact on the frame created to call func2().
----------
Added file: https://bugs.python.org/file49816/func_builtins2.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43228>
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