PythonCharmers/python-future

Support @ in pasteurize (matrix multiplication)

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#472 建立於 2019年5月29日

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 (0 留言) (0 反應) (0 負責人)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.

貢獻者指南

技術棧
python
領域
clitooling
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
2
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Understanding of Python ASTFamiliarity with lib2to3
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.