如何用变量打印随机行？

Question

我有一个变量myline，其中我存储了一条带有break的行现在我想打印2个随机行，任何人都可以建议如何做。

 import random
 myline="This is line 1 \nThis is line 2 \nThis is line 3 \nThis is line 4 \nThis is line 5  "


lines = myline.readlines()
print (random.sample(lines, 2))

Answer 1

您希望splitlines代替readlines：

import random
myline="This is line 1 \nThis is line 2 \nThis is line 3 \nThis is line 4 \nThis is line 5  "


lines = myline.splitlines()
print(random.sample(lines, 2))

# ['This is line 4 ', 'This is line 1 ']

readlines返回文件中的行列表。在这里，您有一个要拆分的字符串。

如果要打印由换行符分隔的行，只需join带换行符的行列表：

print('\n'.join(random.sample(lines, 2)))