Simple javascript minifier using closure compiler

jsminifier.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import requests
from requests.exceptions import ConnectionError, HTTPError, Timeout
import sys


def minifyjs(content, target):
    URL = 'http://closure-compiler.appspot.com/compile'

    data = {
        "js_code": content,
        "compilation_level": "WHITESPACE_ONLY",
        "output_format": "text",
        "output_info": "compiled_code"
    }

    headers = { "Content-type": "application/x-www-form-urlencoded" }
    try:
        response = requests.post(URL, data=data, headers=headers)
    except (ConnectionError, HTTPError, Timeout) as e:
        print e
        response = ""

    with open(target, 'w') as target_file:
        target_file.write(response.content)


if __name__ == '__main__':
    if sys.argv[1] == 'help':
        print """Minify your javascript file using this script

        Usage:

            python jsminifier.py help
                - Shows the help menu

            python jsminifier.py [sourcefile] [targetfile]
                - Minifies content in sourcefile and stores
                  it to targetfile

                  [sourcefile] - Path of the source file
                  [targetfile] - Path of the target file

            The script creates a new file if targetfile
            does not already exist.
        """
    else:
        source, target = sys.argv[1], sys.argv[2]
        content = open(source).read()
        minifyjs(content, target)