BUG: epoch2num matplotlib deprecation warning · Issue #34850 · pandas-dev/pandas (original) (raw)

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• I have confirmed this bug exists on the latest version of pandas.
• (optional) I have confirmed this bug exists on the master branch of pandas.

Problem description

Using the current matplotlib master branch, pandas raises the following deprecation warning:

/Users/dstansby/miniconda3/envs/dev/lib/python3.8/site-packages/pandas/plotting/_matplotlib/converter.py:256: MatplotlibDeprecationWarning: 
The epoch2num function was deprecated in Matplotlib 3.3 and will be removed two minor releases later.

It looks like this line is present on pandas master, so should probably be changed (I'm not sure how) to avoid raising this deprecation warning.

Expected Output

Output of pd.show_versions()

INSTALLED VERSIONS

commit : None
python : 3.8.3.final.0
python-bits : 64
OS : Darwin
OS-release : 19.4.0
machine : x86_64
processor : i386
byteorder : little
LC_ALL : None
LANG : en_GB.UTF-8
LOCALE : en_GB.UTF-8

pandas : 1.0.4
numpy : 1.18.5
pytz : 2020.1
dateutil : 2.8.1
pip : 20.0.2
setuptools : 47.1.1.post20200604
Cython : None
pytest : 5.4.3
hypothesis : None
sphinx : 3.0.4
blosc : None
feather : None
xlsxwriter : None
lxml.etree : 4.5.1
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 2.11.2
IPython : 7.15.0
pandas_datareader: None
bs4 : 4.9.1
bottleneck : None
fastparquet : None
gcsfs : None
lxml.etree : 4.5.1
matplotlib : 3.2.1.post2858+gc3bfeb9c3
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : None
pytables : None
pytest : 5.4.3
pyxlsb : None
s3fs : None
scipy : 1.4.1
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
xlsxwriter : None
numba : None