python程序编写

dic = {
    "张三":86,
    "李四":97,
    "王五":78
}
with open(r'a.txt','w') as f:
    f.write(str(dic))
with open(r'a.txt','r') as f:
    dic = eval(f.read())
print(dic)

import random
li = [random.randint(0,999) for _ in range(10)]
li.sort()
with open(r'a.txt','w') as f:
    f.write(" ".join(map(str,li))+'\n')
with open(r'a.txt','r') as f:
    t = f.read()
    li = list(map(int,t.split(" ")))
    li.reverse()
with open(r'a.txt','a') as f:
    f.write(" ".join(map(str,li))+'\n')

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