pypa/pip

Speedup startup time

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#4,768 opened on Oct 5, 2017

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 (46 comments) (3 reactions) (0 assignees)Python (8,952 stars) (3,032 forks)batch import
help wantedtype: enhancementtype: performance

Description

There's a lot to gain from speeding up pip's startup time.

For one, pip takes around 600ms to just print the completion text, which is laggy. (as mentioned in #4755). Further, faster startup time might help with the test-suite situation too.

Contributor guide

Tech stack
python
Domain
cliperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Python knowledgeFamiliarity with pip's codebaseProfiling tools (e.g., cProfile)
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate pip's startup code to identify bottlenecks. The issue suggests that importing modules lazily could reduce startup time. Review comments in the issue for suggested approaches and try using profiling tools like cProfile. Consider implementing a simple optimization like deferring import of heavy modules.
Speedup startup time · pypa/pip#4768 | Good First Issue