with open('wenjian.txt', 'a+') as f:
for i in range(10):
a = input()
f.write(a)
f.write('\n')
with open('wenjian.txt', 'r') as f:
lst = f.read().strip("\n").split('\n')
lst = sorted(lst, key = lambda x: len(x))
print('最长字符串:', lst[-1])
print('最短字符串:', lst[0])
with open('wenjian.txt', 'r') as f:
l = []
lst = f.read().strip("\n").split('\n')
for i in lst:
if 'the' in i:
l.append(i)
print(l)
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