需求：拷大量数据，发现有2000G，靠系统的复制功能怕是得好几个小时，于是回来学一手操作，话不多说上代码：

说明：CopyFiles1是可以将sourceDir连子目录一起原样复制到targetDir，而CopyFiles2是在sourceDir中筛选特定格式文件，然后将其直接放在targetDir中，会很乱。但是很快

import osimport timeimport shutilsourceDir = 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 osimport os.pathimport shutilimport 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)

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