example of using gevent coroutines inside a function. Uses pylast and gevent for network calls to last.fm

def_fan.py

def define_fan(fan):
    pool = Pool(4)
    try:

        book = {}
        def name(fan):            
            book['name'] = fan.item.get_name()

        def get_age(fan):           
            book['age'] = fan.item.get_age()

        def get_gender(fan):            
            book['gender'] = fan.item.get_gender()

        def get_top_artists(fan):
            book['top_artists'] = fan.item.get_top_artists()

        stage = pool.map(lambda x: x(fan), [name, get_age, get_gender, get_top_artists])   # lint:ok
        book['top_artists'] = [(x.item.name, int(x.weight)) for x in book['top_artists']]  # lint:ok
     
     except Exception as e:
         print e.message, 'define_fan'

        return book