BUILD: openSUSE: Can't import IncompatibleFrequency in Pandas
Hi, I am trying to install Pandas for a project for our Devs. After installing Pandas with pip3 and trying to run the project, we get this stack trace:

```Traceback (most recent call last):
  File "src/bin/app.py", line 17, in <module>
    from bin.generator_dispatcher import GeneratorDispatcher
  File "/opt/yana/python/report-engine-dev/src/bin/generator_dispatcher.py", line 13, in <module>
    from athlete_baseline_report.bin.athlete_baseline_report import (
  File "/opt/yana/python/report-engine-dev/src/athlete_baseline_report/bin/athlete_baseline_report.py", line 3, in <module>
    from athlete_baseline_report.data_builder.data_builder import DataBuilder
  File "/opt/yana/python/report-engine-dev/src/athlete_baseline_report/data_builder/data_builder.py", line 12, in <module>
    from shared.algorithm.cc.cc_calculation import CcCalculation
  File "/opt/yana/python/report-engine-dev/src/shared/algorithm/cc/cc_calculation.py", line 9, in <module>
    from shared.algorithm.cc.CalculateCC import calculateCC_list
  File "/opt/yana/python/report-engine-dev/src/shared/algorithm/cc/CalculateCC.py", line 16, in <module>
    import pandas as pd
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/__init__.py", line 42, in <module>
    from pandas.core.api import *
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/api.py", line 10, in <module>
    from pandas.core.groupby.groupby import Grouper
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/groupby/__init__.py", line 2, in <module>
    from pandas.core.groupby.groupby import (
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/groupby/groupby.py", line 46, in <module>
    from pandas.core.index import (Index, MultiIndex,
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/index.py", line 2, in <module>
    from pandas.core.indexes.api import *
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/indexes/api.py", line 4, in <module>
    from pandas.core.indexes.base import (Index,
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/indexes/base.py", line 53, in <module>
    from pandas.core import ops
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/ops/__init__.py", line 21, in <module>
    from pandas.core.construction import extract_array
  File "/home/hzhang/.local/lib/python3.6/site-packages/pandas/core/construction.py", line 15, in <module>
    from pandas._libs.tslibs import IncompatibleFrequency, OutOfBoundsDatetime
ImportError: cannot import name 'IncompatibleFrequency'
```
Does Pandas require something else to be installed? The project uses Pandas 0.23.4. I get the same error if I install latest version.

Pandas was installed with pip3 like this:

`sudo -H pip3 install pandas==0.23.4`

The host is Ubuntu 18.04.5 LTS with all installed packages completely up to date.