Command line scripts

Recently a friend showed me a unix C program calender that behaves differently depending on if you run the program as cal or CAL. Uppercase shows the calender in one orientation, and lowercase flips it. Python can also detect if the script name is upper or lowercase. Here's a dry example:

	import sys
	import os.path
	full_filename = sys.argv[0]
	filename, _ext = os.path.splitext(full_filename)
	if filename.isupper():
	print(filename, 'is uppercase')
	elif filename.islower():
	print(filename, 'is lowercase')
	else:
	print(filename, 'is mixed or not handled')

view raw passing.py hosted with ❤ by GitHub

> python PASSING.py
PASSING is uppercase

> python passing.py
passing is lowercase

I think this is pretty neat.