如何用python将随机数写入文件

import random
draw = [] 
while True:
    numbers_lotto = random.randint(1,50)    
    draw.append(numbers_lotto)
    if len(draw) == 5 # the numbers?
        break

import random
file_name = 'random_numbers.txt'
with open ('file_name', 'w') as a_file:
    for i in range (100):
        a_file.write ('{}n'.format (random.random ()))
with open ('file_name', 'r') as a_file:
    a_list = [float (word) for word in a_file.read () .split ()]
print (a_list)

或

import random
import pickle
file_name = 'random_numbers.txt'
with open (file_name, 'wb') as a_file:
    pickle.dump ([random.random () for i in range (100)], a_file)
with open (file_name, 'rb') as a_file:
    a_list = pickle.load (a_file)
print (a_list)