只读取特定行我使用for循环来读取文件,但是我只想读取特定的行,比如第26行和第30行。有什么内置的功能来实现这一点吗?谢谢
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皈依舞
TA贡献1851条经验 获得超3个赞
fp = open("file")for i, line in enumerate(fp): if i == 25: # 26th line elif i == 29: # 30th line elif i > 29: breakfp.close()
i == n-1
n
with open("file") as fp: for i, line in enumerate(fp): if i == 25: # 26th line elif i == 29: # 30th line elif i > 29: break
Smart猫小萌
TA贡献1911条经验 获得超7个赞
def picklines(thefile, whatlines): return [x for i, x in enumerate(thefile) if i in whatlines]
thefile
whatlines
def yieldlines(thefile, whatlines): return (x for i, x in enumerate(thefile) if i in whatlines)
return
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