Python-仅读取特定行

如果要读取的文件很大，并且你不想一次读取内存中的整个文件：

fp = open("file")for i, line in enumerate(fp):    if i == 25:        # 26th line    elif i == 29:        # 30th line    elif i > 29:        breakfp.close()

注意，

i == n-1

在Python 2.6或更高版本中：

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