how to clear shell in Python on Mac using OS X EI Capitan sofrwear with "The Calico Project, Version 2.4.2"? I tried couple of ways, it gives me error like that (1) python>>> import subprocess as sp .......2> sp. call('cls', shell = True) Traceback (most recent call last): File "", line 1, in File "/Users/javedmohammad/Desktop/Calico/bin/Lib/subprocess.py", line 397, in StandardError: Exception has been thrown by the target of an invocation. (2)

python>>> def cls (): .......2> print(' '* 50) .......3> cls () File "", line 2 print(' '* 50)

^ SyntaxError: expected an indented block