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BUG: Mixed period cannot be displayed with ValueError #12615

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BUG: Mixed period cannot be displayed with ValueError #12615

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@sinhrks sinhrks commented Mar 14, 2016

  • closes #xxxx (not reported)
  • tests added / passed
  • passes git diff upstream/master | flake8 --diff
  • whatsnew entry
# we can create Series contains Periods with mixed freq
s = pd.Series([pd.Period('2011-01', freq='M'), pd.Period('2011-02-01', freq='D')])

# print the created Series raises ValueError
print(s)
# ValueError: Input has different freq=D from PeriodIndex(freq=M)

@sinhrks sinhrks added Output-Formatting __repr__ of pandas objects, to_string Period Period data type labels Mar 14, 2016
@sinhrks sinhrks added this to the 0.18.1 milestone Mar 14, 2016
@sinhrks sinhrks added the Bug label Mar 14, 2016
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jreback commented Mar 14, 2016

I would change the exception that PeriodIndex raises to maybe: IncompatibileFrequency(ValueError) and catch that. Its a more informative error I think. (its in src/periods.pyx/extract_ordinals)

@sinhrks sinhrks force-pushed the period_format branch 4 times, most recently from 6da8f8d to 6b3d2a1 Compare March 15, 2016 21:13
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Current coverage is 88.64%

Merging #12615 into master will not affect coverage as of b12fd75

@@            master   #12615   diff @@
=======================================
  Files          275      275       
  Stmts       133688   133716    +28
  Branches         0        0       
  Methods          0        0       
=======================================
+ Hit         118511   118539    +28
  Partial          0        0       
  Missed       15177    15177

Review entire Coverage Diff as of b12fd75

Uncovered Suggestions

  1. +0.07% via ...s/io/sas/sas7bdat.py#30...121
  2. +0.03% via ...s/io/sas/sas7bdat.py#531...569
  3. +0.03% via ...as/tools/plotting.py#633...664
  4. See 7 more...

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sinhrks commented Mar 16, 2016

OK, changed to raise IncompatibleFrequency and fixed corresponding tests.

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jreback reviewed Mar 16, 2016
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pandas/src/period.pyx
@@ -627,6 +628,11 @@ cdef ndarray[int64_t] localize_dt64arr_to_period(ndarray[int64_t] stamps,
_DIFFERENT_FREQ = "Input has different freq={1} from Period(freq={0})"
_DIFFERENT_FREQ_INDEX = "Input has different freq={1} from PeriodIndex(freq={0})"


class IncompatibleFrequency(ValueError):
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if its helpful you can import this into pandas.tseries.common. can do that in the future.

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OK, added.

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jreback commented Mar 16, 2016

lgtm. let me know if you want to change the import now or later.

jreback
jreback reviewed Mar 16, 2016
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doc/source/whatsnew/v0.18.1.txt
@@ -44,7 +44,8 @@ Enhancements
API changes
~~~~~~~~~~~


- ``Period`` and ``PeriodIndex`` now raises ``IncompatibleFrequency`` error
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btw, usually just make these 1 line as the formatter will wrap it (and I think create a weird space otherwise)

@sinhrks sinhrks force-pushed the period_format branch 3 times, most recently from ef04e9f to c4737ae Compare March 16, 2016 14:45
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jreback commented Mar 16, 2016

lgtm. ping on green

@jreback jreback closed this in 0f3a7b8 Mar 17, 2016
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jreback commented Mar 17, 2016

thanks @sinhrks

jreback added a commit that referenced this pull request Mar 17, 2016
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TST: compat of tests xref #12615 on windows
2a53113
@sinhrks sinhrks deleted the period_format branch March 19, 2016 20:54
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