python3.7 -V Python 3.7.3and still dones't work
python3.7 GetAllData_test.py Traceback (most recent call last): File "GetAllData_test.py", line 6, in <module> import serial ModuleNotFoundError: No module named 'serial'*** up until now on all the codes I wrote , I only used python3 in the command line - and it works