>>> import icalendar
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/icalendar/__init__.py", line 4, in <module>
    from icalendar.cal import (
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/icalendar/cal.py", line 20, in <module>
    import dateutil.rrule
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/dateutil/rrule.py", line 10, in <module>
    import calendar
  File "/Users/***/Documents/Progetti/Python/Calendario/calendar.py", line 1, in <module>
    from icalendar import Calendar
ImportError: cannot import name 'Calendar' from 'icalendar' (/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/icalendar/__init__.py)