BUG: np.round does not work on a series in 0.18.0 · Issue #12600 · pandas-dev/pandas (original) (raw)

First, conda install pandas is currently pulling down 0.18.0, which was unexpected since I only see RCs right now, but, on to the real issue...

In 0.18.0 I cannot pass a series to np.round...

In [35]: np.round(pd.Series([1.11, 2.21]), 1)

TypeError Traceback (most recent call last) in () ----> 1 np.round(pd.Series([1.11, 2.21]), 1)

/Users/holmgren/miniconda3/envs/pvlib35/lib/python3.5/site-packages/numpy/core/fromnumeric.py in round_(a, decimals, out) 2784 except AttributeError: 2785 return _wrapit(a, 'round', decimals, out) -> 2786 return round(decimals, out) 2787 2788

TypeError: round() takes from 1 to 2 positional arguments but 3 were given

np.round does still work on a DataFrame in 0.18.0...

In [5]: np.round(pd.DataFrame([1.11,2.22]), 1) Out[5]: 0 0 1.1 1 2.2

A Series on pandas 0.17.1...

In [4]: np.round(pd.Series([1.12, 2.22]), 1) Out[4]: 0 1.1 1 2.2 dtype: float64

Ok, I know that there's now a round method in pandas (which is great), but I like to use np.round in unit tests so that I can test against earlier versions of pandas.

Version info:

In [34]: pd.show_versions()

INSTALLED VERSIONS

commit: None python: 3.5.1.final.0 python-bits: 64 OS: Darwin OS-release: 15.3.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: en_US.UTF-8

pandas: 0.18.0 nose: 1.3.7 pip: 8.1.0 setuptools: 20.2.2 Cython: None numpy: 1.10.4 scipy: 0.17.0 statsmodels: None xarray: None IPython: 4.1.1 sphinx: 1.3.5 patsy: None dateutil: 2.4.2 pytz: 2015.7 blosc: None bottleneck: None tables: None numexpr: None matplotlib: 1.5.1 openpyxl: None xlrd: None xlwt: None xlsxwriter: None lxml: None bs4: None html5lib: None httplib2: None apiclient: None sqlalchemy: None pymysql: None psycopg2: None jinja2: 2.8 boto: None