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BUG: Return KeyError for invalid string key #23540
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BUG: Return KeyError for invalid string key #23540
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Hello @toobaz! Thanks for submitting the PR.
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@@ Coverage Diff @@
## master #23540 +/- ##
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+ Coverage 92.25% 92.25% +<.01%
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Files 161 161
Lines 51207 51212 +5
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+ Hits 47239 47244 +5
Misses 3968 3968
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…fixed * upstream/master: (47 commits) CLN: remove values attribute from datetimelike EAs (pandas-dev#23603) DOC/CI: Add linting to rst files, and fix issues (pandas-dev#23381) PERF: Speeds up creation of Period, PeriodArray, with Offset freq (pandas-dev#23589) PERF: define is_all_dates to shortcut inadvertent copy when slicing an IntervalIndex (pandas-dev#23591) TST: Tests and Helpers for Datetime/Period Arrays (pandas-dev#23502) Update description of Index._values/values/ndarray_values (pandas-dev#23507) Fixes to make validate_docstrings.py not generate warnings or unwanted output (pandas-dev#23552) DOC: Added note about groupby excluding Decimal columns by default (pandas-dev#18953) ENH: Support writing timestamps with timezones with to_sql (pandas-dev#22654) CI: Auto-cancel redundant builds (pandas-dev#23523) Preserve EA dtype in DataFrame.stack (pandas-dev#23285) TST: Fix dtype mismatch on 32bit in IntervalTree get_indexer test (pandas-dev#23468) BUG: raise if invalid freq is passed (pandas-dev#23546) remove uses of (ts)?lib.(NaT|iNaT|Timestamp) (pandas-dev#23562) BUG: Fix error message for invalid HTML flavor (pandas-dev#23550) ENH: Support EAs in Series.unstack (pandas-dev#23284) DOC: Updating DataFrame.join docstring (pandas-dev#23471) TST: coverage for skipped tests in io/formats/test_to_html.py (pandas-dev#22888) BUG: Return KeyError for invalid string key (pandas-dev#23540) BUG: DatetimeIndex slicing with boolean Index raises TypeError (pandas-dev#22852) ...
git diff upstream/master -u -- "*.py" | flake8 --diff
In principle, it is nice to raise different errors if the string is invalid, or if the resulting period is missing. However, we want, and need, methods such as
.loc
to return errors of predictable types.And indeed, this is how
PeriodIndex
, for instance, works:[...]