[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

Change by Serhiy Storchaka :


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stage: backport needed -> resolved
status: open -> closed

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[issue30166] Import command-line parsing modules only when needed

[Irit Katriel]

Irit Katriel  added the comment:

Looks like the backport was done and this issue can be closed.

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nosy: +iritkatriel

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[issue30166] Import command-line parsing modules only when needed

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset c0ef607c52e58e94693fbedb27f2813bc3fed8fa by terryjreedy in branch 
'3.6':
[3.6] bpo-30166: backport pyshell changes (GH 1293) (#2098)
https://github.com/python/cpython/commit/c0ef607c52e58e94693fbedb27f2813bc3fed8fa


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[issue30166] Import command-line parsing modules only when needed

[Terry J. Reedy]

Changes by Terry J. Reedy :


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pull_requests: +2154

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[issue30166] Import command-line parsing modules only when needed

[Terry J. Reedy]

Terry J. Reedy added the comment:

I want to backport the idlelib.pyshell change.  I have been told that even a 
partial backport, even if done by hand, is a backport and the result a 
cherry-pick.

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assignee: serhiy.storchaka -> terry.reedy
nosy: +terry.reedy
stage: resolved -> backport needed
status: closed -> open
versions: +Python 3.6 -Python 3.7

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[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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assignee:  -> serhiy.storchaka
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset 7e4db2f253c68d56177c2fd083bcf8f88d34 by Serhiy Storchaka in 
branch 'master':
bpo-30166: Import command-line parsing modules only when needed. (#1293)
https://github.com/python/cpython/commit/7e4db2f253c68d56177c2fd083bcf8f88d34


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[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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nosy: +aronacher, berker.peksag, bethard

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[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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pull_requests: +1400

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[issue30166] Import command-line parsing modules only when needed

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

Berker suggested to move this part from issue30152 to its own PR.

When the file can be imported as a module and run as a script it is worth to 
make command-line parsing modules (getopt, optparse, argparse) be imported only 
when they are used, i.e. when the file is ran as a script. Most of the stdlib 
modules already do this.

Proposed patch moves imports of command-line parsing modules and some other 
modules used only when the module is ran to the main() function or to the 
branch executed only if __name__ == "__main__". It doesn't change scripts and 
files that are purposed to be used only for running (__main__.py, main.py).

--
components: Library (Lib)
messages: 292319
nosy: serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Import command-line parsing modules only when needed
type: enhancement
versions: Python 3.7

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