Avoid more stat() calls in importlib

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Refactor
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
performance

Research direction

Start by reviewing the linked imptime.patch and locating the importlib implementation it targets. Count the affected stat() calls, then run the relevant importlib tests and verify that the optimization preserves import behavior while avoiding the unnecessary calls.

Written by the indexing model from the issue text.

Description

performance stdlib topic-importlib
BPO 14067
Nosy @ncoghlan, @pitrou, @ericsnowcurrently, @jimjjewett, @nanjekyejoannah
Files
  • imptime.patch
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = None
created_at = <Date 2012-02-20.21:18:06.926>
labels = ['library', 'performance']
title = 'Avoid more stat() calls in importlib'
updated_at = <Date 2021-10-23.15:13:02.228>
user = 'https://github.com/pitrou'

    bugs.python.org fields:

    activity = <Date 2021-10-23.15:13:02.228>
actor = 'nanjekyejoannah'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2012-02-20.21:18:06.926>
creator = 'pitrou'
dependencies = []
files = ['24584']
hgrepos = []
issue_num = 14067
keywords = ['patch']
message_count = 10.0
messages = ['153809', '153814', '153815', '153816', '153840', '153891', '154424', '154486', '404878', '404879']
nosy_count = 6.0
nosy_names = ['ncoghlan', 'pitrou', 'Arfrever', 'eric.snow', 'Jim.Jewett', 'nanjekyejoannah']
pr_nums = []
priority = 'low'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue14067'
versions = ['Python 3.3']

    Dominant language
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