Writing a base64 encoded string into a plist

base64_plist.py

#!/usr/bin/python

import base64
import plistlib
import errno
import os

def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as exc:  # Python >2.5
        if exc.errno == errno.EEXIST and os.path.isdir(path):
            pass
        else:
            raise

def main():

    # This is the license.
    license = 'abc123'

    # Directory
    plist_path = '/Users/Shared/Library/Preferences'

    # File
    plist_file = 'com.cambridgesoft.plist'

    # make the directory if it exists
    mkdir_p(plist_path)

    # Encode the license to base64
    encoded_license = base64.b64encode(license)

    # An ampty dict for writing (we could read this if we cared about existing data)
    plist = {}
    plist['license'] = encoded_license

    # Write our file - this will wipe out anything that exists
    plistlib.writePlist(plist, os.path.join(plist_path, plist_file))


if __name__ == '__main__':
    main()