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BUG: to_json should raise exception for non-unique index / columns (#4359) #4376

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merged 1 commit into from
Jul 28, 2013
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BUG: to_json should raise exception for non-unique index / columns (#4359) #4376

merged 1 commit into from
Jul 28, 2013

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Komnomnomnom
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Issue #4359

to_json will raise ValueErrors where non-unique indices or columns would cause invalid JSON to be produced. Updated docstring and added some tests.

@Komnomnomnom Komnomnomnom mentioned this pull request Jul 27, 2013
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@jreback jreback merged commit f735141 into pandas-dev:master Jul 28, 2013
@jreback jreback mentioned this pull request Jul 28, 2013
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jreback commented Jul 28, 2013

thanks!

fixing #4377 now

@Komnomnomnom Komnomnomnom deleted the ujson-unique-keys branch July 30, 2013 00:27
@chris-b1 chris-b1 mentioned this pull request Sep 21, 2018
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@jameswinegar jameswinegar mentioned this pull request Sep 23, 2018
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adhadse commented Jun 1, 2021

Why don't to_dict can return a list of values for non Unique indexes being the key in dictionary? Came here from issue #22801.

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