python-刪除文件的特定行

有一次需要刪除一些html文件中的統計鏈接, 通過用遍歷文本的每行,然後正則查找網址,使用下面的函數刪除行。

刪除文本文件的特定行

def removeLine(filename, lineno):      fro = open(filename, "r",encoding='UTF-8')        current_line = 0      while current_line < lineno:          fro.readline()          current_line += 1        seekpoint = fro.tell()      frw = open(filename, "r+")      frw.seek(seekpoint, 0)        # read the line we want to discard      fro.readline()  # 讀入一行進記憶體 ,同時 文件指針下移實現刪除        # now move the rest of the lines in the file      # one line back      chars = fro.readline()      while chars:          frw.writelines(chars)          chars = fro.readline()        fro.close()      frw.truncate()      frw.close()