What does this, is it succesful or prints smth like "already installed":
pip install --upgrade openpyxl
I've had similar thing (on ubuntu, but it does not matter), when installed openpyxl "pip install openpyxl", then runned
python3 and it was like "hey, where is my openpyxl?" - but it was installed for python 2, heh, so, you have to check from INSIDE python's shell it's version and check/look for module openpyxl. You may be installed openpyxl (by python version or virtualenv) for other python, not that you running then.
1. Check if
print 'hello'
runs without error - you running python 2.
2. Google get python version from python console stackoverflow, something like:
>>> import sys
>>> print(sys.version)
3.6.4 |Anaconda, Inc.| (default, Jan 16 2018, 10:22:32) [MSC v.1900 64 bit (AMD64)]