详解python脚本自动生成需要文件实例代码

defproduceBnf(infilename,outfilename):

  List=[]

  withopen(infilename,'r') as inf:

    forlineininf.readlines():

      List.append(re.match("正则表达式").group(?))

  withopen(outfilename,'w') as outf:

    i=0

    outf.write("文件头");

    forcommandinList:

        outf.write(“写入刚刚读取的内容（也可能是某种对应关系）”)

        outf.write("写入其他内容")

    outf.write("写入文件尾")

infile=sys.argv[1]

produceBnf(infile,os.path.join(os.path.dirname(infile),"输出文件的名字"));