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gh-137952: update csv.Sniffer().has_header() docs to describe the actual off-by-onish behavior
#137953
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gpshead
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maurycy:csv-sniffer-has_headers-off-by-one
Nov 12, 2025
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gh-137952: update csv.Sniffer().has_header() docs to describe the actual off-by-onish behavior
#137953
gpshead
merged 3 commits into
python:main
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maurycy:csv-sniffer-has_headers-off-by-one
Nov 12, 2025
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csv.Sniffer().has_header docs to describe the actual off-by-onish behaviorcsv.Sniffer().has_header() docs to describe the actual off-by-onish behavior
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
eendebakpt
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Sep 1, 2025
gpshead
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Nov 11, 2025
Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
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… the actual off-by-onish behavior (pythonGH-137953) * checks 21, not 20 * Say "header" instead of "first row" to disambiguate per review. --------- (cherry picked from commit 0d7b48a) Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com> Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
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GH-141434 is a backport of this pull request to the 3.14 branch. |
miss-islington
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Nov 12, 2025
… the actual off-by-onish behavior (pythonGH-137953) * checks 21, not 20 * Say "header" instead of "first row" to disambiguate per review. --------- (cherry picked from commit 0d7b48a) Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com> Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
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GH-141435 is a backport of this pull request to the 3.13 branch. |
gpshead
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…e the actual off-by-onish behavior (GH-137953) (#141434) gh-137952: update `csv.Sniffer().has_header()` docs to describe the actual off-by-onish behavior (GH-137953) * checks 21, not 20 * Say "header" instead of "first row" to disambiguate per review. --------- (cherry picked from commit 0d7b48a) Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
gpshead
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Nov 12, 2025
…e the actual off-by-onish behavior (GH-137953) (#141435) gh-137952: update `csv.Sniffer().has_header()` docs to describe the actual off-by-onish behavior (GH-137953) * checks 21, not 20 * Say "header" instead of "first row" to disambiguate per review. --------- (cherry picked from commit 0d7b48a) Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
StanFromIreland
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… the actual off-by-onish behavior (pythonGH-137953) * checks 21, not 20 * Say "header" instead of "first row" to disambiguate per review. --------- Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com> Co-authored-by: Maurycy Pawłowski-Wieroński <maurycy@maurycy.com>
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Please see gh-137952 for the context.
The question is whether we should fix the docs or the code.
I err on the docs:
csv.Sniffer()is very old, users may rely on this behavior without knowing it.csv.Sniffer().has_header()checks 21, not 20 rows, contrary to what the docs say #137952📚 Documentation preview 📚: https://cpython-previews--137953.org.readthedocs.build/