Dateutil & Pytz missing dependencies - Python

Question

Im trying to run a code for portfolio optimization and i get the following error right on import of pandas.

Traceback (most recent call last):
  File "/Users/***/Desktop/Markowitz-master/MarkowitzOpt.py", line 2, in <module>
    from pandas import Series, DataFrame
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/__init__.py", line 18, in <module>
    raise ImportError("Missing required dependencies {0}".format(missing_dependencies))
ImportError: Missing required dependencies ['pytz', 'dateutil']

I used pip freeze to check all installed packages, and both puts and dateutil are installed.

Any insights would be appreciated!!!

Answer 1

dateutil can get confused with python-dateutil, try the following:

pip install python-dateutil pytz --force-reinstall --upgrade

Answer 2

If you are also using conda you may have to also update the packages in conda.

conda update python-dateutil pytz

This worked for me.

Note: I was getting the error when I attempted to load pandas in IPython for Python 2.7.15. I was not in a conda virtual env but the ipython install that was being loaded came from conda. Updating the packages in conda solved the issue.