m0rin09ma3 tweetup 20130729

Prerequisite

I installed tweepy, twython modules for this assignment in my 'virt1' environment. Also, I registered this application to https://dev.twitter.com/apps in order to make it work on my twitter account. I changed access level from "Read only"(default) to "Read and write".

(virt1) $ pip list
tweepy (2.1)
twython (3.0.0)

(virt1) $ python tweetup.py -h
usage: tweetup.py [-h] -f FILE -d DESCRIPTION [--version]

post file & comment to twitter

optional arguments:
  -h, --help            show this help message and exit
  -f FILE, --file FILE
  -d DESCRIPTION, --description DESCRIPTION
  --version             show program's version number and exit

A link to the source code.

Explanation

This program will ask user to input file and description from command line. Then prompt user to work on twitter authorization process. After completing all these steps, this program will upload the file.

First of all, my main function

def main():
    """
    0. Check command-line arguments
    1. Get Tokens from twitter
    2. Post image file
    """
    cmd_args = check_cmd_args()
    #print cmd_args

    dict_tokens = get_tokens()
    #print dict_tokens

    post_img(cmd_args, dict_tokens)

    return 0


if __name__ == '__main__':
    sys.exit(main())

Whatever the file you specify with '-f' will be posted with the description you specify with '-d'. Imported argparse module.

def check_cmd_args():
    """ check command linke arguments """
    parser = argparse.ArgumentParser(description='post file & \
                                                  comment to twitter')
    parser.add_argument('-f', '--file', required=True)
    parser.add_argument('-d', '--description', required=True)
    parser.add_argument('--version', action='version',
                        version='%(prog)s 1.0')
    args = parser.parse_args()
    #print(args)

    return args

Next function will ask you to interact with twitter api and authorize you for a posting. As you can see, it asks you to input consumer_key & consumer_secret. Then it will bring up a browser and ask you to authorize your operation. If you click 'Authorize it' button, it will show you 8digits newly created PIN code. Program is waiting for your input("Enter a pin number from twitter.com:"). Please enter the PIN code. you will get an access_key & access_secret. Imported webbrowser module.

def get_tokens():
    """
    Query the user for their consumer key/secret
    then attempt to fetch a valid access token.
    """

    tokens = {}
    tokens['consumer_key'] = raw_input('Consumer key: ').strip()
    tokens['consumer_secret'] = raw_input('Consumer secret: ').strip()
    auth = tweepy.OAuthHandler(tokens['consumer_key'],
                               tokens['consumer_secret'])

    # Open authorization URL in browser
    webbrowser.open(auth.get_authorization_url())

    # Ask user for verifier pin
    pin = raw_input('Enter a pin number from twitter.com: ').strip()

    # Get access token
    access_token = auth.get_access_token(pin)

    # Give user the access token
    tokens.update({'access_key': access_token.key, 'access_secret': access_token.secret})
    #print '  Key: %s' % access_token.key
    #print '  Secret: %s' % access_token.secret

    return tokens

Finally, aggregates all infromation and post it. you should be able to see your new post on twitter.

def post_img(cmd_args, tokens):
    """ post file and comment to twitter """
    #print cmd_args.file
    #print cmd_args.description
    twitter = Twython(tokens['consumer_key'], tokens['consumer_secret'],
                      tokens['access_key'], tokens['access_secret'])

    # Updating Status with Image
    photo = open(cmd_args.file, 'rb')
    img_post_status = twitter.update_status_with_media(status=cmd_args.description,
                                                       media=photo)
    #print img_post_status