anything to snakecase

snakecase

#!/usr/bin/env python
"""

Usage: Put this script in any /bin folder in the PATH and run
snakecase "Hello World (123).csv"
OR 
Download this snippet and run
python snakecase "Hello World (123).csv"
Output: hello_world_123.csv
"""
import re, sys
input_string = sys.argv[1]
print(re.sub(" ", "_", re.sub(r'[^\w \.]', '', input_string.strip(" ")).lower()))