本来是去项目公司拷数据,结果去了发现有500G,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 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)
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