使用切片，如下所示：
with open('yourfile.txt') as f:
lines_after_17 = f.readlines()[17:]
如果文件太大而无法加载到内存中：
with open('yourfile.txt') as f:
for _ in range(17):
next(f)
for line in f:
# do stuff
在读取Python文件中的行时跳过前几行
在读取Python文件中的行时跳过前几行
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