ImportError: No module named openpyxl

He instalado openpyxl a través de pip3, pero cuando trato de importar en mi script me sale este error:

"python -u "/Users/hectorv/zipcodes/zips.py"
hectorv@Hectors-MacBook-Air zipcodes % python -u "/Users/hectorv/zipcodes/zips.py"
Traceback (most recent call last):
  File "/Users/hectorv/zipcodes/zips.py", line 1, in <module>
    import openpyxl
ImportError: No module named openpyxl"

Cuando intento instalar de nuevo me sale esto:

hectorv@Hectors-MacBook-Air zipcodes % pip3 install openpyxl
Requirement already satisfied: openpyxl in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (3.0.9)
Requirement already satisfied: et-xmlfile in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from openpyxl) (1.1.0)