New submission from Terry J. Reedy:
When users 'saveas', warn if name matches that of a stdlib modules. Note that
shadowing is opposite for lib and binary (builtin) modules, so message needs to
be different. I am not worrying about 3rd party modules on the search path
(ie, site-packages), which would be shadowed like lib modules. Rough outline of
code to add to IOBinding.
from os,path import dirname
import sys
# this part on initiallzation or first saveas call
def libmodules():
with open(dirname(dirname(__file__))) as lib:
for f in lib:
if <directory containing __init__.py#> or f.endswith(.py):
yield f
# test.test__all__ has this code
islibmodule = frozenset(libmodules()).__contains__
isbinmodule = frozenset(sys.builtin_module_names).__contains__
# this part after saveas dialog returns
if islibmodule(name):
go = warn("This name matches a stdlib name in /Lib. If you run python in
this directory, you will not be able to import the stdlib module. Continue?".)
elif isbinmodule(name):
go = warn("This name matches a builtin stdlib name. You will not be able
to import this file. Continue?".)
else:
go = True
if go:
<save as requested>
else:
(get name again> # or put in while not go loop
----------
messages: 253775
nosy: lac, markroseman, terry.reedy
priority: normal
severity: normal
stage: needs patch
status: open
title: IDLE: warn if save-as name matches stdlib name
type: enhancement
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6
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Python tracker <[email protected]>
<http://bugs.python.org/issue25522>
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