PythonCharmers/python-future

Support @ in pasteurize (matrix multiplication)

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#472 创建于 2019年5月29日

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 (0 评论) (0 反应) (0 负责人)Python (1,172 star) (327 fork)batch import
futurize scripthelp wantedunscheduled

描述

If x @ y appears in a script, it should be changed to x.__matmul__(y). This is used mostly by Numpy.

If you'd like to get fancy about it, you can also support __rmatmul__ and __imatmul__, but just the first one is enough for now.

贡献者指南

技术栈
python
领域
clitooling
议题类型
feature
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。
2
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。
1-3 hours
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
Understanding of Python ASTFamiliarity with lib2to3
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。
70
研究方向
Start by examining existing operator transformations in the pasteurize tool, e.g., look at the fixers in the 'python future' repository, such as 'libfuturize/fixes/fix add future imports.py' or similar files that handle binary operators. Understand how the @ operator is parsed in Python's AST and how to match it using lib2to3 patterns. The implementation should replace 'x @ y' with 'x. matmul (y)'. Check if there are any existing tests for operator transformations and ensure the new fixer follows the same convention. No linked PRs or maintainer comments are available; the issue is straightforward.