gh-142236: Improve error location for missing comma in string concatenations#142330
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…oncatenations When a multi-line string concatenation is missing a comma before the next argument, the error previously pointed to the first string in the concatenation, which was confusing because the actual fix needed to be applied after the last string. This change adds a helper function that detects multi-line expressions and adjusts the error position to point to the last line, making it immediately clear where the comma should be added.
pablogsal merged commit c433986 into python:main 50 checks passed
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fatelei pushed a commit to fatelei/cpython that referenced this pull request Dec 12, 2025
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When a multi-line string concatenation is missing a comma before the
next argument, the error previously pointed to the first string in the
concatenation, which was confusing because the actual fix needed to be
applied after the last string. This change adds a helper function that
detects multi-line expressions and adjusts the error position to point
to the last line, making it immediately clear where the comma should be
added.