BUG: Fix bug in combine_first with string dtype and only NA #37568
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jreback
added
the
NA - MaskedArrays
|
this is fine, thanks. likely we would want some more direct testing of categoricals here (e.g. pass a dtype='string' EA array in (or actually any EA array) and it should hit this path). if you can followon with some additional tests |
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black pandasgit diff upstream/master -u -- "*.py" | flake8 --diffThis caused bugs in
Index.union()andIndex.join()withhow=outertoo, but they are called from combine_first. Could add test, if this would be preferable. Hope Adding ExtensionArray to the if condition does not crash anything else. Run most categorical tests already locally.