pypa/pip

Speedup startup time

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#4,768 创建于 2017年10月5日

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 (46 评论) (3 反应) (0 负责人)Python (8,952 star) (3,032 fork)batch import
help wantedtype: enhancementtype: performance

描述

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.

贡献者指南

技术栈
python
领域
cliperformance
议题类型
performance
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Python knowledgeFamiliarity with pip's codebaseProfiling tools (e.g., cProfile)
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
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.