Use UTF-8 (en)coding, fixed double print

ghsu.py

#!/usr/bin/env python
# coding=utf-8

'''
GitHub Switch User (ghsu)
Author: Tarocco 🐰
License: MIT License
'''

import sys
import os
import re
import subprocess
from subprocess import CalledProcessError, PIPE
import argparse

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'

def main():
    parser = argparse.ArgumentParser(
        description='Switch between GitHub identities'
    )
    parser.add_argument(
        '--global',
        dest='git_global',
        action='store_true',
        help='Switch user in global git configuration instead of work tree',
    )
    parser.add_argument(
        'id',
        help='Id file name suffix (this is your GitHub user name)',
    )
    parser.add_argument(
        'email',
        help='The email address associated with your GitHub account',
    )
    
    args = parser.parse_args()
    git_global = args.git_global
    id_ssh = args.id
    email = args.email
    
    if not git_global:
        try:
            subprocess.check_call(
                ['git', 'rev-parse', '--is-inside-work-tree'], stdout=PIPE)
        except CalledProcessError as e:
            # Error printed to stderror
            return
    
    if git_global:
        subprocess.check_call(['git', 'config', '--global', 'user.name', id_ssh])
        subprocess.check_call(['git', 'config', '--global', 'user.email', email])
        l = ['Switched ', bcolors.WARNING, 'global', bcolors.ENDC, ' id to ', id_ssh]
    else:
        origin = subprocess.check_output(['git', 'remote', '-v']).decode()
        for line in origin.splitlines():
            remote, url, mode = re.split('\t| ', line)
            url_new = re.sub(
                r'^ghsu_?([^:]*)(:.*$)',
                'ghsu_' + id_ssh.lower() + r'\2',
                url)
        subprocess.check_call(['git', 'remote', 'set-url', remote, url_new])
        subprocess.check_call(['git', 'config', 'user.name', id_ssh])
        subprocess.check_call(['git', 'config', 'user.email', email])
        l = ['Switched id to ', id_ssh]
    
    print(''.join(l));

if __name__ == "__main__":
    main()