Alexs-MacBook-Pro-2124:keygen alex$ bin/keygen.py scad/kwikset.scad --bitting 25536 -o housekey.stl
Traceback (most recent call last):
  File "bin/keygen.py", line 36, in <module>
    r = subprocess.call([scad, args.filename, "-o", args.output] + opts + remaining)
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 323, in call
    with Popen(*popenargs, **kwargs) as p:
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 1522, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'openscad': 'openscad'