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Created on 2021-03-09 15:42 by Keepun, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (3) | |||
|---|---|---|---|
| msg388366 - (view) | Author: Keepun (Keepun) | Date: 2021-03-09 15:42 | |
exec() ignores scope.
Code:
--------------------------
class ExecTest:
def public(self):
h=None
exec("h='It is public'")
print(h)
self._private()
def _private(self):
h=None
exec("h='It is private'", globals(), locals())
print(h)
h = None
exec("h='It is global'")
print(h)
e=ExecTest()
e.public()
Result
--------------------------
It is global
None
None
--------------------------
Python 3.7.10 (default, Feb 26 2021, 13:06:18) [MSC v.1916 64 bit (AMD64)]
and
Python 3.8.5 (default, Jan 27 2021, 15:41:15) [GCC 9.3.0]
|
|||
| msg388370 - (view) | Author: Eryk Sun (eryksun) *  |
Date: 2021-03-09 16:41 | |
exec(obj, globals(), locals()) is the same as exec(obj). Also, locals in a function scope are optimized, so the locals() dict is a snapshot. Modifying the snapshot dict doesn't modify the optimized local variables. At most I think this issue is a duplicate of bpo-24800, to clarify the implicit local scope and behavior. |
|||
| msg388425 - (view) | Author: Mark Dickinson (mark.dickinson) *  |
Date: 2021-03-10 11:09 | |
> At most I think this issue is a duplicate of bpo-24800 Agreed; closing here. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:42 | admin | set | github: 87614 |
| 2021-03-10 11:09:55 | mark.dickinson | set | status: open -> closed superseder: exec docs should note that the no argument form in a local scope is really the two argument form nosy: + mark.dickinson messages: + msg388425 resolution: duplicate stage: resolved |
| 2021-03-09 16:41:50 | eryksun | set | nosy:
+ eryksun messages: + msg388370 |
| 2021-03-09 15:42:58 | Keepun | create | |