Python Closures Example

#/usr/bin/env python

def log(level):
    def msg(message):
        return '%s: %s' % (level, message)
    return msg

if __name__ == '__main__':
    info = log('INFO')
    warning = log('WARNING')
    error = log('ERROR')

    info('Successful connection.')
    warning('Disk usage 80%.')
    error('Invalid msisdn.')