Python文件去除注释的方法

本文实例讲述了Python文件去除注释的方法。分享给大家供大家参考。具体实现方法如下：

#!/usr/bin/python 
# -*- coding: GBK -*- 
#writer:xmnathan 
#py文件去注释 
import re 
import os 
import ConfigParser 
Python=\'CleanNote\' 
def ReadIni(path,section,option):#文件路径，章节，关键词 
  #读取ini
  cf=ConfigParser.ConfigParser() 
  cf.read(path) 
  value=cf.get(section,option)#如果用getint()则直接读取该数据类型为整数 
  return value 
def IsPassLine(strLine): 
  #是否是可以忽略的行 
  #可忽略行的正则表达式列表 
  RegularExpressions=[\"\"\"/\'.*#.*/\'\"\"\",\"\"\"/\".*#.*/\"\"\"\", 
            \"\"\"/\'/\'/\'.*#.*/\'/\'/\'\"\"\",\"\"\"/\"/\"/\".*#.*/\"/\"/\"\"\"\"]
  for One in RegularExpressions: 
    zz=re.compile(One) 
    if re.search(zz,strLine)==None: 
      continue 
    else: 
      return True#有匹配 则忽略 
    return False 
def ReadFile(FileName): 
  #读取并处理文件 
  fobj=open(FileName,\'r\') 
  AllLines=fobj.readlines() 
  fobj.close() 
  NewStr=\'\' 
  LogStr=\'/n%20s/n\'%(FileName.split(\'//\')[-1])#输出的日志 
  nline=0 
  for eachiline in AllLines: 
    index=eachline.find(\'#\')#获取带注释句‘#\'的位置索引 
    if index==-1 or nline<3 or IsPassLine(eachline): 
      if eachiline.strip()!=\'\':#排除纯空的行 
        NewStr=NewStr+eachiline 
    else: 
      if index!=0: 
        NewStr=NewStr+eachiline[:index]+\'/n\'#截取后面的注释部分 
        LogStr+=\"ChangeLine: %s/t%s\"%(nline,eachline[index:]) 
    nline+=1 
  return NewStr,LogStr 
def MakeCleanFile(SrcPath,DescPath,FileList): 
  fLog=open(DescPath+\'//\'+\'CleanNoteLog.txt\',\'w\') 
  for File in FileList: 
    curStr,LogStr=ReadFile(SrcPath+\'//\'+File) 
    fNew=open(DescPath+\'//\'+File,\'w\') 
    fNew=write(curStr) 
    fNew.close() 
    fLog.write(LogStr) 
  fLog.close() 
def Main(): 
  #从ini获取源文件夹及目标文件夹路径 
  IniPath=os.getcwd()+\'//\'+PtName+\'.ini\' 
  SrcPath=ReadIni(IniPath,PyName,\'SrcPath\')#源文件夹 
  DescPath=ReadIni(IniPath,PyName,\'DescPath\')#目的文件夹 
  #如果目的文件夹不存在，创建之 
  if not os.path.exists(DescPath): 
    os.makedirs(DescPath) 
  FileList=[] 
  for files in os.walk(SrcPath): 
    for FileName in files[2]: 
      if FileName.split(\'.\')[-1]==\'py\': 
        FileList.append(FileName) 
  MakeCleanFile(SrcPath,DescPath,FileList) 
if __name__==\'__main__\': 
  Main() 
  print \'>>>End<<<\' 
  os.system(\'pause\') 

ps:配置文件CleanNote.ini的格式

[CleanNote] 
SrcPath=E:/test 
DescPath=E:/test/newfiles 

 
批量去除指定源文件夹中的py文件的注释，并生成拷贝与指定目的文件夹

希望本文所述对大家的Python程序设计有所帮助。