Shorten link with Bit.ly via Python

burl.py

#!/usr/bin/env python

# Requires config file at ~/.burl.py:
# [Defaults]
# login = MYLOGINNAMEHERE
# key = MYTOKENHERE

# Shortens URL via Bit.ly
# Input: URL from clipboard OR CLI argument
# Action: The shortened URL is put on the clipboard, ready for pasting. You'll be notified via growlnotify that your link is ready.

import argparse
import ConfigParser
import os
import subprocess
import sys
import urllib
from urlparse import urlparse

DEFAULT_CONFIG_PATH = '~/.' + os.path.basename(__file__)

# From http://blog.vwelch.com/2011/04/combining-configparser-and-argparse.html | https://gist.github.com/joech4n/c7a8c2a8c9ba0d5a6891
conf_parser = argparse.ArgumentParser(description='''Generate bit.ly URL

API login and key is sourced from''' + DEFAULT_CONFIG_PATH + ''' by default, but can be overridden with --login and --key. Format of config file:
[Defaults]
login = MYLOGINNAMEHERE
key = MYTOKENHERE
''',
# Turn off help, so we print all options in response to -h
    add_help=False
    )
conf_parser.add_argument("-c", "--conf_file",
                         help="Specify config file", metavar="FILE", default=os.path.expanduser('~') + '/.' + os.path.basename(__file__))
args, remaining_argv = conf_parser.parse_known_args()
defaults = {
  "option1" : "some default",
  "option2" : "some other default",
  }
if args.conf_file:
  config = ConfigParser.SafeConfigParser()
  config.read([args.conf_file])
  defaults = dict(config.items("Defaults"))

# Don't surpress add_help here so it will handle -h
parser = argparse.ArgumentParser(
  # Inherit options from config_parser
  parents=[conf_parser],
  # print script description with -h/--help
  description=__doc__,
  # Don't mess with format of description
  formatter_class=argparse.RawDescriptionHelpFormatter,
  )
parser.set_defaults(**defaults)
parser.add_argument('--login', help='If not specified, will be sourced from ' + DEFAULT_CONFIG_PATH)
parser.add_argument('--key', help='If not specified, will be sourced from ' + DEFAULT_CONFIG_PATH)
parser.add_argument('longUrl', nargs='?')
args = parser.parse_args(remaining_argv)

if args.key is None:
  sys.exit('ERROR: Cannot load key from '+DEFAULT_CONFIG_PATH+' and --key not specified. An API KEY must be provided via ' + DEFAULT_CONFIG_PATH + ' or --key')
else:
  API_KEY = args.key

if args.login is None:
  sys.exit('ERROR: Cannot load login from '+DEFAULT_CONFIG_PATH+' and --login not specified. A login must be provided via ' + DEFAULT_CONFIG_PATH + ' or --key')
else:
  LOGIN = args.login

# Get the URL of the frontmost Firefox window/tab though AppleScript.
applescript = '''tell application "Firefox"
set myFirefox to properties of front window as list
get item 3 of myFirefox
end tell'''

if args.longUrl is None:
  #input = popen("osascript -e '" + applescript + "'").read().strip() # Get URL from tab via AppleScript
  input = os.popen('pbpaste', "r").read().strip()
  source = 'clipboard'
else:
  input = args.longUrl
  source = 'CLI argument'

assert urlparse(input).netloc, "ERROR: Invalid URL" # Verify Long URL

# Encode input
url = urllib.quote_plus(input)

# Get the shortened URL from bit.ly.
bitlyCall = 'http://api.bit.ly/v3/shorten?longUrl=' + url + '&login=' + LOGIN + '&apiKey=' + API_KEY + '&format=txt'
shortUrl = subprocess.check_output(['curl', '--stderr', '/dev/null', bitlyCall])

# Put the shortened URL on the clipboard.
os.popen('pbcopy', 'w').write(shortUrl)

# Display growl notification
cmd = '/usr/local/bin/growlnotify -i HTML -m \'Shortened ' + input + 'to \n' + shortUrl + '\''
subprocess.call(['/usr/local/bin/growlnotify', '-m ', input, shortUrl])
print 'Shortened URL from ' + source + ': ' + shortUrl