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[prko]

@Robin_Morabito
I have found the reason. Please refer to:

Three problems or characteristics of Unix-related methods and class

I now know the cause of the Problem 1. Under macOS 12.6.5, there is no python file and pip in the system path, but pyhon3 and pip3. The following code "which python3".unixCmd returns: /usr/bin/python3 and the following code "which pip3".unixCmd returns: -> 1507 /usr/bin/pip3 So the followings work if one uses only the system default python3: "pip3 install pyphen".unixCmd The code above returns: -> 1511 Defaulting to user installation because normal site-packages is not writeable Col…