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BUG: inferred_freq results in None for eastern hemispheres timezones #7310

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sinhrks opened this issue Jun 2, 2014 · 3 comments · Fixed by #7318
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BUG: inferred_freq results in None for eastern hemispheres timezones #7310

sinhrks opened this issue Jun 2, 2014 · 3 comments · Fixed by #7318
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Bug Frequency DateOffsets Timezones Timezone data dtype
Milestone
0.14.1

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@sinhrks
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sinhrks commented Jun 2, 2014

Found during #7299.

dates = ['2000-01-31', '2000-02-29', '2000-03-31', '2000-04-30']
pd.DatetimeIndex(dates).inferred_freq
# M

pd.DatetimeIndex(dates, tz='US/Eastern').inferred_freq
# M

pd.DatetimeIndex(dates, tz='Mexico/General').inferred_freq
# M

pd.DatetimeIndex(dates, tz='Asia/Tokyo').inferred_freq
# None

pd.DatetimeIndex(dates, tz='Europe/Paris').inferred_freq
# None

pd.DatetimeIndex(dates, tz='Australia/Sydney').inferred_freq
# None
@jreback
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jreback commented Jun 2, 2014

this should use localize the timestamps before returning i8: https://github.com/pydata/pandas/blob/master/pandas/tseries/frequencies.py#L649

@jreback jreback added this to the 0.14.1 milestone Jun 2, 2014
@sinhrks sinhrks mentioned this issue Jun 3, 2014
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@jreback jreback reopened this Jun 6, 2014
@jreback
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jreback commented Jun 6, 2014

fixes (I think just #7317) reverted, so this needs to be addressed again

@sinhrks

@jreback
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jreback commented Jun 6, 2014

sorry...this is ok, its the Datetime.insert issue

@jreback jreback closed this as completed Jun 6, 2014
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Bug Frequency DateOffsets Timezones Timezone data dtype
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BUG: inferred_freq results in None with eastern hemisphere timezones sinhrks/pandas
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@jreback @sinhrks