New submission from Huyston <[email protected]>:
This seems like a bug for me, forgive me if its not.
Consider the following script:
def func():
print(var)
my_globals = {'func':func,'var':14}
exec("print(var);func()",my_globals,my_globals)
This is the output:
14
Traceback (most recent call last):
File "bug.py", line 5, in <module>
exec("print(var);func()",my_globals,my_globals)
File "<string>", line 1, in <module>
File "bug.py", line 2, in func
print(var)
NameError: name 'var' is not defined
The first line gives the expected result (14). However the second line throws
the NameError.
If 'func' is defined inside the exec argument string, then it prints 14 and 14,
which is the expected result (for me at least).
Ex:
def func():
print(var)
my_globals = {'func':func,'var':14}
exec("def func():\n print(var)\nprint(var);func()",my_globals,my_globals)
Result:
14
14
So is this really a bug or is this the expected behavior somehow?
----------
components: Interpreter Core
messages: 353622
nosy: Huyston
priority: normal
severity: normal
status: open
title: Exec not recognizing global variables inside function
type: behavior
versions: Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue38331>
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