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gh-137627: Make csv.Sniffer.sniff() delimiter detection 1.6x faster - #137628

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hugovk merged 31 commits into

python:mainfrom

maurycy:csv-sniffer-counter-set

Oct 23, 2025

Merged

gh-137627: Make csv.Sniffer.sniff() delimiter detection 1.6x faster#137628
hugovk merged 31 commits into
python:mainfrom
maurycy:csv-sniffer-counter-set

Commits on Aug 11, 2025
- do not iterate over all ascii
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- NEWS entry
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- bring back the comment
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- bang
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- document the public method
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- import within Sniffer
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- Merge branch 'main' into csv-sniffer-counter-set
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- _ASCII_CHARS, set operators
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Commits on Aug 13, 2025
- Merge branch 'main' into csv-sniffer-counter-set
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- update docs, no set operations
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Commits on Aug 15, 2025
- Merge branch 'main' into csv-sniffer-counter-set
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Commits on Aug 17, 2025
- Merge branch 'main' into csv-sniffer-counter-set
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Commits on Aug 18, 2025
- Update Lib/csv.py
  
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- move whatsnew to Optimizations
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- s/seen/num_lines/
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- picnixz suggestion
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- use isascii
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Commits on Aug 19, 2025
- CRLF tie
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- simple tie test
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- rm assert
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- update the benchmark numbers
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- Merge branch 'main' into csv-sniffer-counter-set
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Commits on Aug 28, 2025
- Update Lib/test/test_csv.py
  
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- vs
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- Update Doc/whatsnew/3.15.rst
  
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- Update Lib/csv.py
  
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Commits on Aug 30, 2025
- ,: tie
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- be consistent
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- check the exc msg
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- Update Lib/test/test_csv.py
  
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Commits on Sep 11, 2025
- s/charFrequency/char_frequency/
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gh-137627: Make `csv.Sniffer.sniff()` delimiter detection 1.6x faster by maurycy · Pull Request #137628 · python/cpython · GitHub

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gh-137627: Make csv.Sniffer.sniff() delimiter detection 1.6x faster - #137628

gh-137627: Make csv.Sniffer.sniff() delimiter detection 1.6x faster#137628hugovk merged 31 commits intopython:mainpython/cpython:mainfrom maurycy:csv-sniffer-counter-setmaurycy/cpython:csv-sniffer-counter-setCopy head branch name to clipboard

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Commits on Aug 11, 2025

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Commits on Aug 28, 2025

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Commits on Sep 11, 2025

gh-137627: Make csv.Sniffer.sniff() delimiter detection 1.6x faster#137628
hugovk merged 31 commits into
python:mainfrom
maurycy:csv-sniffer-counter-set