AttributeError on datetime.timedelta assignment after reindex · Issue #8209 · pandas-dev/pandas (original) (raw)

In the code below, I expected that the assignment didn't fail, since everything seems "right" . However, AttributeError is being raised.

A bug? Am I doing something wrong?

In [106]: import pandas as pd

In [107]: import datetime as dt

In [108]: s = pd.Series([])

In [109]: s Out[109]: Series([], dtype: float64)

In [110]: s.loc['B'] = dt.timedelta(1)

In [111]: s Out[111]: B 1 days dtype: timedelta64[ns]

In [112]: s = s.reindex(s.index.insert(0, 'A'))

In [113]: s Out[113]: A NaT B 1 days dtype: timedelta64[ns]

In [114]: s.loc['A'] = dt.timedelta(1)

AttributeError Traceback (most recent call last) in () ----> 1 s.loc['A'] = dt.timedelta(1) /home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/indexing.pyc in setitem(self, key, value)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/indexing.pyc in _setitem_with_indexer(self, indexer, value)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/internals.pyc in setitem(self, **kwargs)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/internals.pyc in apply(self, f, axes, filter, do_integrity_check, **kwargs)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/internals.pyc in setitem(self, indexer, value)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/internals.pyc in _try_coerce_args(self, values, other)

/home/flaviovs/.virtualenv/hm/local/lib/python2.7/site-packages/pandas-0.14.1_354_g12248ff-py2.7-linux-x86_64.egg/pandas/core/internals.pyc in masker(v)

AttributeError: 'datetime.timedelta' object has no attribute 'view'

Tried with 0.14.1 and latest on GH (v0.15pre) , to no avail.

I'm so sorry I'm not able to provide a patch right now (still wrapping my head around pandas internals -- any directions about how to fix this is issue will be appreciated, though).

Versions:

In [125]: pd.show_versions()

INSTALLED VERSIONS

commit: None python: 2.7.3.final.0 python-bits: 64 OS: Linux OS-release: 3.2.60 machine: x86_64 processor: byteorder: little LC_ALL: en_US.UTF-8 LANG: en_US.UTF-8

pandas: 0.14.1-354-g12248ff nose: None Cython: 0.20.1 numpy: 1.8.1 scipy: None statsmodels: None IPython: 2.1.0 sphinx: None patsy: None scikits.timeseries: None dateutil: 2.2 pytz: 2014.3 bottleneck: None tables: None numexpr: None matplotlib: 1.1.1rc2 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: None httplib2: None apiclient: None rpy2: None sqlalchemy: None pymysql: None psycopg2: None