import  random

alphabet = 'qazwsxedcrfvtgbyhnujmiklp'
numbers = '1234567890'
alphabet_upper = 'QAZWSXEDCRFVTGBYHNUJMIKOLP'
symbols = '_-$&№@'

def generate_password(length, count_num, count_sym=0, count_uppers=0):

    count_alpha = length - count_num - count_sym - count_uppers

    counts = [count_alpha, count_uppers, count_num, count_sym]
    lists = [alphabet, alphabet_upper, numbers, symbols]

    password = []
    for lst, count in zip(lists, counts):
        password = password + [random.choice(lst) for i in range(count)]

    random.shuffle(password)
    password = ''.join(password)
    return password

def _test():

    def get_user_int(msg):
        '''
        Return integer from user.
        :param msg:
        :return user_input:
        '''
        user_input = input(msg)
        try:
            user_input = int(user_input)
        except:
            print("Something wrong...")
        return user_input

    length = get_user_int('Input a length for a password -> ')
    count_num = get_user_int('How much numbers?-> ')
    count_sym = get_user_int('How much symbols?-> ')
    count_uppers = get_user_int('How much uppercases?-> ')

    password = generate_password(length, count_num, count_sym, count_uppers)

    print('Password successfully generated.\n' + password)

if __name__ == '__main__':
    _test()