QWERTY input to Left handed DVORAK

q_to_lhd.py

#! /usr/bin/python3

"""
Usage: ./qwerty_to_dvorak.py input.txt
OR cat input.txt | ./qwerty_to_dvorak.py

NOTE: This converts to LEFT HANDED DVORAK, not standard or right handed
"""

import sys

if len(sys.argv) == 2:
    try:
        text = open(sys.argv[1], 'r').read()
    except:
        print('Error opening', sys.argv[1])
        raise SystemExit
else:
    text = input()

qwerty = '`1234567890-=~!@#$%^&*()_+qwertyuiop[]\QWERTYUIOP{}|asdfghjkl;\'ASDFGHJKL:"zxcvbnm,./ZXCVBNM<>?'
dvorak = '`[]/pfmlj4321~{}?PFMLJ$#@!;qbyurso.65=\:QBYURSO>^%+|-kcdtheaz87_KCDTHEAZ*&\'xgvwni,09"XGVWNI<)('

translation = text.maketrans(dvorak, qwerty)
translated = text.translate(translation)

print(translated)