import os
import time
import shutil
sourceDir = r"D:\copytest\datatest"
targetDir = r"D:\copytest\result"
copyFileCounts = 0
 
def CopyFiles1(sourceDir, targetDir):
#完全连子目录也会复制好，美观
 global copyFileCounts
 print(sourceDir )
 print("%s 当前处理文件夹%s已处理%s 个文件" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), sourceDir,copyFileCounts) )
 for f in os.listdir(sourceDir):
  sourceF = os.path.join(sourceDir, f)
  targetF = os.path.join(targetDir, f)
 
  if os.path.isfile(sourceF):
 
   if not os.path.exists(targetDir):
    os.makedirs(targetDir)
   copyFileCounts += 1
 
 
   if not os.path.exists(targetF) or (os.path.exists(targetF) and (os.path.getsize(targetF) != os.path.getsize(sourceF))):
 
    open(targetF, "wb").write(open(sourceF, "rb").read())
    print ("%s %s 复制完毕" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), targetF))
   else:
    print ("%s %s 已存在，不重复复制" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), targetF))
 
  if os.path.isdir(sourceF):
   copyFiles(sourceF, targetF)
 
def CopyFiles2(dir):
 #会将目录下所有文件都复制在一起，速度快，可以筛选文件
 i=0
 for root,dir1,filename in os.walk(dir):
  #print(filename)
  for index in range(len(filename)):
  #print(os.path.splitext(filename[index])[1])
  #if os.path.splitext(filename[index])[1]=='.':#这里注意filename是个元组，splitext方法的时候只能是字符串
  if 1==1:
   #i+=1
   print('here')
   root1="D:\\copytest\\result3"
   old_path = os.path.join(root, filename[index])
   print(old_path)
   new_path = os.path.join(root1,filename[index])
   shutil.copyfile(old_path,new_path)
 
#print("总共有",i,"图层文件被复制！")
 
if __name__ == "__main__":
 time_start = time.time()
 try:
 import psyco
 psyco.profile()
 except ImportError:
  pass
 #CopyFiles1(sourceDir,targetDir)
 CopyFiles2("D:/copytest/datatest")
 time_end = time.time()
 print('totally cost', time_end - time_start)
 
#实战代码
#!/usr/bin/python2
# coding=UTF-8
#@author neo_will
#version 2019-04-02 10:39
 
import os
import os.path
import shutil
import time, datetime
 
#fpath_2018 = [1207, 1121, 1120, 1119, 1112, 1101, 1025, 1009, 0704, 0608, 0531, 0530, 0517, 0502, 0418, 0330, 0201, 0131]
#sourceDir=r"F:\LEVEL2_shanghai\2018\fpath_2018[0:]"
#des_dir=r"G:\MarketDataSupplement\shanghai\2018\fpath_2018[0:]"
#原始目录和拷贝到的目录地址
sourceDir = r"D:\tools\wj"
targetDir = r"D:\Users\wj"
copyFileCounts = 0
 
#定义拷贝文件的函数
def copyFiles(sourceDir, targetDir):
 global copyFileCounts
 print (sourceDir )
 print ("%s 当前处理文件夹%s已处理%s 个文件" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), sourceDir,copyFileCounts) )
 for f in os.listdir(sourceDir):
 sourceF = os.path.join(sourceDir, f)
 targetF = os.path.join(targetDir, f)
 if os.path.isfile(sourceF):
 #创建目录
 if not os.path.exists(targetDir):
 os.makedirs(targetDir)
 copyFileCounts += 1
 
 #文件不存在的话，或者存在但是大小存在差异不同，执行完全覆盖操作
 if not os.path.exists(targetF) or (os.path.exists(targetF) and (os.path.getsize(targetF) != os.path.getsize(sourceF))):
 #二进制文件
 open(targetF, "wb").write(open(sourceF, "rb").read())
 print u"%s %s copy over" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), targetF)
 else:
  print("%s %s is exists,please don't copy more" %(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())), targetF))
 
 if os.path.isdir(sourceF):
 copyFiles(sourceF, targetF)
 
if __name__ == "__main__":
 time_start = time.time()
 try:
 import psyco
 psyco.profile()
 except ImportError:
 pass
 #copyFiles(sourceDir,targetDir)
 copyFiles(r"D:\tools\wj",r"D:\Users\wj")
 time_end = time.time()
 print('totally cost', time_end - time_start)