Solution: No module named dateutil.relativedelta

Problem Description

Traceback： 

from dateutil.relativedelta import relativedelta

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 21, in do_import
    module = self._system_import(name, *args, **kwargs)
ImportError: No module named dateutil.relativedelta

Solution: Download the corresponding package

pip install python_dateutil

 execute again