Qt for Python (PySide/Shiboken)

from main.py: # line 86 parser.add_argument("-apic", "--android-python-install-path" […] # line 109 python_path = args.android_python_install_path […] # line 119 & 120 valid_python_path = True if python_path and Path(python_path).exists(): # line 155, guarding the full cross compile build step if not python_path or not valid_python_path: When supplying a path that does not exist, python_path is non-empty and Truethy. The block starting 120 is skipped, because the path does not exist. Then in 155, not python_path is False and not valid_python_path is False, because setting it to False was skipped in the block starting at 120. Both checks are False, and the whole block is skipped.