ModuleNotFoundError: No module named 'msgpack', but msgpack is already installed

I'm on Windows using PowerShell and I'm trying to run a python script that calls another script that imports msgpack. My msgpack version is 1.0.2.

> python3 .\testing.py  Traceback (most recent call last):    File "C:\<path>\testing.py", line 1, in <module>      import b0RemoteApi    File "C:\<path>\b0RemoteApi.py", line 7, in <module>      import msgpack  ModuleNotFoundError: No module named 'msgpack'  

https://stackoverflow.com/questions/67030434/modulenotfounderror-no-module-named-msgpack-but-msgpack-is-already-installed April 10, 2021 at 11:05AM