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astype(object) with dtype datetime64 does wacky things when value is NaT #3414

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astype(object) with dtype datetime64 does wacky things when value is NaT#3414
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jreback
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BugDtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions
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0.12
@lexual

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@lexual
lexual
opened on Apr 22, 2013
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Similar to #3416, failing in 0.11

Calling astype(object) when the dtype is datetime64 and there are NaT values, sets them to 2262-04-10 00:12:43.145224

I would have thought they should be set to None.

See attached test case.

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BugDtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

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