Pandas dataframe.columns.name attribute value is missing when dataframe.style is rendered

The name attribute of dataframe.columns does not get populated when rendering the dataframe.style property of the dataframe. This behavior occurs regardless of whether I set styler.columns.name explicitly.

Code Sample, a copy-pastable example if possible

import pandas as pd test_df = pd.DataFrame({'A':range(4), 'B':range(4)}) test_df.columns.name = 'x_label' test_df.index.name = 'y_label'

styler = test_df.style styler.columns.name = 'x_label' styler.render()

HTML output: This is from styler.render():

       <tr>
            <th class="blank">
            <th class="col_heading level0 col0">A
            <th class="col_heading level0 col1">B       
        </tr>

Expected Output

       <tr>
            <th class="blank">x_label
            <th class="col_heading level0 col0">A
            <th class="col_heading level0 col1">B       
        </tr>

output of pd.show_versions()

INSTALLED VERSIONS

commit: None python: 2.7.11.final.0 python-bits: 64 OS: Windows OS-release: 7 machine: AMD64 processor: Intel64 Family 6 Model 61 Stepping 4, GenuineIntel byteorder: little LC_ALL: None LANG: en_US.UTF-8

pandas: 0.18.1 nose: 1.3.7 pip: 8.1.1 setuptools: 20.3 Cython: 0.23.4 numpy: 1.10.4 scipy: 0.17.0 statsmodels: 0.6.1 xarray: None IPython: 4.1.2 sphinx: 1.3.5 patsy: 0.4.0 dateutil: 2.5.1 pytz: 2016.2 blosc: None bottleneck: 1.0.0

tables: 3.2.2 numexpr: 2.5 matplotlib: 1.5.1 openpyxl: 2.3.2 xlrd: 0.9.4 xlwt: 1.0.0 xlsxwriter: 0.8.4 lxml: 3.6.0 bs4: 4.4.1 html5lib: None httplib2: None apiclient: None sqlalchemy: 1.0.12 pymysql: None psycopg2: None jinja2: 2.8 boto: 2.39.0

Comment From: jreback

this is a dupe of #13266