我有一个文件“ TestingDeleteLines.txt”，大约300行文本。现在，我正在尝试使其从该文件中打印10条随机行，然后删除这些行。
#!/usr/bin/env python
import random
k = 10
filename = 'TestingDeleteLines.txt'
with open(filename) as file:
lines = file.read().splitlines()
if len(lines) > k:
random_lines = random.sample(lines, k)
print("\n".join(random_lines)) # print random lines
with open(filename, 'w') as output_file:
output_file.writelines(line + "\n"
for line in lines if line not in random_lines)
elif lines: # file is too small
print("\n".join(lines)) # print all lines
with open(filename, 'wb', 0): # empty the file
pass
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