Python os.path和shutil模块实现文件复制与删除

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# edit: www.jb200.com
#
 
import os
import os.path
import shutil
import time,datetime
 
def copyFiles(sourceDir,  targetDir): #把某一目录下的所有文件复制到指定目录中
     if sourceDir.find(".svn") > 0:
         return
     for file in os.listdir(sourceDir):
         sourceFile = os.path.join(sourceDir,  file)
         targetFile = os.path.join(targetDir,  file)
         if os.path.isfile(sourceFile):
             if not os.path.exists(targetDir):
                 os.makedirs(targetDir)
             if not os.path.exists(targetFile) or(os.path.exists(targetFile) and (os.path.getsize(targetFile) != os.path.getsize(sourceFile))):
                     open(targetFile, "wb").write(open(sourceFile, "rb").read())
         if os.path.isdir(sourceFile):
             First_Directory = False
             copyFiles(sourceFile, targetFile)
 
def removeFileInFirstDir(targetDir):#删除一级目录下的所有文件
    for file in os.listdir(targetDir):
        targetFile = os.path.join(targetDir,  file)
        if os.path.isfile(targetFile):
            os.remove(targetFile)
 
def coverFiles(sourceDir,  targetDir):#复制一级目录下的所有文件到指定目录
         for file in os.listdir(sourceDir):
             sourceFile = os.path.join(sourceDir,  file)
             targetFile = os.path.join(targetDir,  file)
             #cover the files
             if os.path.isfile(sourceFile):
                 open(targetFile,"wb").write(open(sourceFile,"rb").read())
 
def moveFileto(sourceDir,  targetDir):#复制指定文件到目录
    shutil.copy(sourceDir,  targetDir)
 
def writeVersionInfo(targetDir):#往指定目录写文本文件
    open(targetDir, "wb").write("Revison:")
 
def getCurTime():#返回当前的日期，以便在创建指定目录的时候用
     nowTime = time.localtime()
     year = str(nowTime.tm_year)
     month = str(nowTime.tm_mon)
     if len(month) < 2:
         month = '0' + month
     day =  str(nowTime.tm_yday)
     if len(day) < 2:
         day = '0' + day
     return (year + '-' + month + '-' + day)
 
if  __name__ =="__main__":#主函数
     print "Start(S) or Quilt(Q) n"
     flag = True
     while (flag):
         answer = raw_input()
         if  answer == 'Q':
             flag = False
         elif answer == 'S':
             formatTime = getCurTime()
             targetFoldername = "Build " + formatTime + "-01"
             Target_File_Path += targetFoldername
             copyFiles(Debug_File_Path,   Target_File_Path)
             removeFileInFirstDir(Target_File_Path)
             coverFiles(Release_File_Path,  Target_File_Path)
             moveFileto(Firebird_File_Path,  Target_File_Path)
             moveFileto(AssistantGui_File_Path,  Target_File_Path)
             writeVersionInfo(Target_File_Path+"test.txt")
             print "all sucess"
         else:
             print "not the correct command"