quicknum - a script to quickly convert/print binary, hex, and decimal numbers

quicknum.py

#!/usr/bin/env python

import re
import sys
x=sys.argv[1]

# Check to see if the string is only binary
nonbin = re.search(r'[2-9A-Fa-f]', x)

# First, check to see if there were matches in binary, if not
# Attempt to convert to an integer assuming base 10 if it 
# fails, attempt base 16 (hex)
if nonbin is None:
    try:
        num = int(x, 2)
    except:
        print("Problem parsing value from", x)
        sys.exit(1)
else:
    try:
        num = int(x)
    except:
        num = int(x, 16)

hnum = ('{:010X}'.format(num))
print('Integer: {:40d}'.format(num))
print('Hex:     {:>40s}'.format(hnum))
print('Binary:  {0:40b}'.format(num))