Question

我想在python文本文件中检查字符串“ rele”，如果不存在字符串，请复制文件的最后一行，然后按如下所示对其进行修改以添加为新条目。

示例：实际文件：不存在“版本”的地方

"123456",1,0,"mher",0,"N",01Jan1986 00:00,130:00,
"123456",1,1,"ermt",0,"N",01Jan1986 00:00,100:00,
"123456",1,2,"irbt",0,"N",01Jan1986 00:00,120:00,

预期输出：

"123456",1,0,"mher",0,"N",01Jan1986 00:00,130:00,
"123456",1,1,"ermt",0,"N",01Jan1986 00:00,0:00,
"123456",1,2,"irbt",0,"N",01Jan1986 00:00,0:00,
"123456",1,3,"rele",0,"0000",01Jan1986 00:00,0:00,

该文件的最后一个条目与之前的条目相似，只是对其3,4和6列的更改很少。

我的代码：

  fp = open(srcEtab.txt, 'w')
  for line in lines:
      if 'rele' in line:
         foundRelOrPickup = True         
  if not foundRelOrPickup:
     fp1 = open ( 'srcEtab.txt',"w" )
     lineList = fp1.readlines()
     new_line = lineList[len(lineList)-1]
     fp1.write(new_line)
  fp.close()
  fp1.close()

Answer 1

with open(yourFile) as f:
        lines =  f.readlines()
        if not any(map(lambda line: "rele" in line,lines)):
                last_line_words = lines[-1].split(',')
                last_line_words[2] = len(lines)
                last_line_words[3] = '"rele"'
                last_line_words[5] = '"0000"'
                lines.append(",".join([str(i) for i in last_line_words]))

        with open(otherFile, "w") as f1:
                for line in lines:
                        f1.write(line)

复制python文件中的最后一行并在添加新行之前对其进行修改

1 个答案: