New submission from Yuri Kanivetsky :
Consider the following script:
# import pdb; pdb.set_trace()
# import re
def f():
import re
print((lambda: re.findall('a', 'aaa'))())
import pdb; pdb.set_trace()
print('test')
f()
When you run it and try to evaluate `(lambda: re.findall('a', 'aaa'))()`, you
get:
['a', 'a', 'a']
> /home/yuri/_/1.py(7)f()
-> print('test')
(Pdb) (lambda: re.findall('a', 'aaa'))()
*** NameError: name 're' is not defined
(Pdb) import re
(Pdb) (lambda: re.findall('a', 'aaa'))()
*** NameError: name 're' is not defined
(Pdb)
With the commented out breakpoint it works:
> /home/yuri/_/a.py(3)()
-> def f():
(Pdb) import re
(Pdb) (lambda: re.findall('a', 'aaa'))()
['a', 'a', 'a']
(Pdb)
Also it works with uncommented global import and second breakpoint:
['a', 'a', 'a']
> /srv/http/sl/makosh/a.py(7)f()
-> print('test')
(Pdb) (lambda: re.findall('a', 'aaa'))()
['a', 'a', 'a']
(Pdb)
>From what I can see the issue occurs when there's no `re` in `globals`
>argument here: https://github.com/python/cpython/blob/v3.6.4/Lib/pdb.py#L376
I've run into it when trying to grep some object's attribute names, like:
!list(filter(lambda x: re.search('class', x), dir(__name__)))
--
messages: 311871
nosy: Yuri Kanivetsky
priority: normal
severity: normal
status: open
title: locally imported modules are unaccessible in lambdas in pdb
type: behavior
versions: Python 3.6
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Python tracker
<https://bugs.python.org/issue32806>
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