Python编程 从入门到实践课后练习10-12

import json
def get_favourite_num():
"""该函数用于询问并存储你喜欢的数字"""
num = input('What is your favourite number?')
filename = 'num.json'
with open(filename, 'w') as f:
json.dump(num , f)
return num

def read_num():
"""该函数用于显示文件中你喜欢的数字"""
try:
with open('num.json') as f:
num_1 = json.load(f)
except FileNotFoundError:
pass
else:
return num_1

def show_num():
"""该函数用于打印喜爱的数字，如果没有就让用户输入"""
num_2 = read_num()
if num_2:
print('Your favourate num is '+ num_2)
else:
num_2 = get_favourite_num()
print('I will remember your luck num')
show_num()

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