New submission from Antony Lee:
Consider the following example:
def f(x=1):
def g():
y = 2
raise Exception
g()
f()
$ python -mpdb -ccontinue example.py
<... traceback ...>
> /tmp/example.py(4)g()
-> raise Exception
(Pdb) p x
##### this can be worked around using "up"
*** NameError: name 'x' is not defined
(Pdb) p y
2
(Pdb) p (lambda: y)()
##### this is more awkward to work around, e.g. (lambda *, y=y: y)()
*** NameError: name 'y' is not defined
Use case: I wan to pass a lambda to a numerical optimizer, but the optimizer
fails using the default starting point. Within pdb, I'd like to pass a
different starting point but the same lambda, to see whether this helps.
----------
components: Library (Lib)
messages: 257888
nosy: Antony.Lee
priority: normal
severity: normal
status: open
title: pdb fails to access variables closed over
versions: Python 3.5, Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26072>
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