ValueError: module functions cannot set METH_CLASS or METH_STATIC

Code Sample, a copy-pastable example if possible

import matplotlib.pyplot as plt
import pandas as pd

Problem description

If I import pyplot before pandas, I get the following error:

Traceback (most recent call last):
  File "bug_pandas.py", line 2, in <module>
    import pandas as pd
  File "/home/joh/.local/lib/python3.6/site-packages/pandas/__init__.py", line 57, in <module>
    from pandas.io.api import *
  File "/home/joh/.local/lib/python3.6/site-packages/pandas/io/api.py", line 19, in <module>
    from pandas.io.packers import read_msgpack, to_msgpack
  File "/home/joh/.local/lib/python3.6/site-packages/pandas/io/packers.py", line 69, in <module>
    from pandas.util._move import (
ValueError: module functions cannot set METH_CLASS or METH_STATIC

If I re-order the imports so that pandas is imported first, the error disappears. Not sure if this is an issue with pyplot or pandas, but the exception seems to come from within pandas.

Expected Output

Output of pd.show_versions()

INSTALLED VERSIONS ------------------ commit: None python: 3.6.6.final.0 python-bits: 64 OS: Linux OS-release: 4.18.8-041808-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: en_US.UTF-8 LANG: en_US.UTF-8 LOCALE: en_US.UTF-8

pandas: 0.23.4 pytest: 3.8.0 pip: 9.0.1 setuptools: 40.4.3 Cython: None numpy: 1.15.2 scipy: 0.19.1 pyarrow: None xarray: None IPython: 5.5.0 sphinx: 1.6.7 patsy: None dateutil: 2.7.3 pytz: 2018.5 blosc: None bottleneck: 1.2.0 tables: 3.4.2 numexpr: 2.6.4 feather: None matplotlib: 2.1.1 openpyxl: 2.4.9 xlrd: 1.1.0 xlwt: None xlsxwriter: None lxml: 4.2.1 bs4: 4.6.0 html5lib: 0.999999999 sqlalchemy: 1.1.11 pymysql: None psycopg2: None jinja2: 2.10 s3fs: None fastparquet: None pandas_gbq: None pandas_datareader: None

[slaweksiluk]

sudo -H pip3 uninstall matplotlib
sudo -H apt-get install python3-matplotlib

Fixed ValueError and other warnings on my Ubuntu18.

[AlfTang]

Got same error as well:

Traceback (most recent call last):
  File "/home/user/apiservices/apiservices/urls.py", line 19, in <module>
    from patentClustering import views
  File "/home/user/apiservices/patentClustering/views.py", line 12, in <module>
    import pandas as pd
  File "/usr/local/lib/python3.6/dist-packages/pandas/__init__.py", line 57, in <module>
    from pandas.io.api import *
  File "/usr/local/lib/python3.6/dist-packages/pandas/io/api.py", line 19, in <module>
    from pandas.io.packers import read_msgpack, to_msgpack
  File "/usr/local/lib/python3.6/dist-packages/pandas/io/packers.py", line 69, in <module>
    from pandas.util._move import (
ValueError: module functions cannot set METH_CLASS or METH_STATIC

The problem is fixed it by changing pandas import order as suggested. I suspect that the cause is python3.6. When I used python 3.5.2 everything worked fine.