import os,sys maxfileload=1000000 blksize=1024*500

def copyfile(pathFrom,pathTo,maxfileload=maxfileload): """ :param pathFrom: :param pathTo: :param maxfileload: :return:

将单个文件逐字节从pathFrom复制到pathTo； 使用二进制文件模式阻止Unicode解码和换行"""if os.path.getsize(pathFrom)<=maxfileload:    bytesFrom=open(pathFrom,'rb').read()    open(pathTo,'wb').write(bytesFrom)else:    fileFrom=open(pathFrom,'rb')    fileTo=open(pathTo,'wb')    while True:        bytesFrom=fileFrom.read(blksize)        if not bytesFrom:break        fileTo.write(bytesFrom)

def copytree(dirFrom,dirTo,verbose=0): """ 将敌人From下的内容复制到dirTo，返回(文件和目录)数目形式的元组 为避免在某些平台上目录名不可解码，可能需要为其名使用字节 :param dirFrom: :param dirTo: :param verbose: :return: """

fcount=dcount=0for filename in os.listdir(dirFrom):    pathFrom=os.path.join(dirFrom,filename)    pathTo=os.path.join(dirTo,filename)    if not os.path.isdir(pathFrom):        try:            if verbose>1:print('copying',pathFrom,'to',pathTo)            copyfile(pathFrom,pathTo)            fcount+=1        except:            print('Error creating',pathTo,'--skipped')            print(sys.exc_info()[0],sys.exc_info()[1])    else:        if verbose:print('copying dir',pathFrom,'To',pathTo)        try:            os.mkdir(pathTo)            below=copytree(pathFrom,pathTo)            fcount+=below[0]            dcount+=below[1]            dcount +=1        except:            print('Error creating', pathTo, '--skipped')            print(sys.exc_info()[0], sys.exc_info()[1])return (fcount,dcount)

def getArgs(): """ 获取验证文件目录名参数 :return: """

try:    dirFrom,dirTo=sys.argv[1:]except:    print('Usage error:cpall.py dirFrom dirTo')else:    if not os.path.isdir(dirFrom):        print('ErrorLdirFrom is not a directory')    elif not os.path.exists(dirTo):        os.mkdir(dirTo)        print('Note:dirTo was created')        return (dirFrom,dirTo)    else:        print('Waring:dirTo already exist.')        if hasattr(os.path,'samefile'):            same=os.path.samefile(dirFrom,dirTo)        else:            same=os.path.abspath(dirFrom)==os.path.abspath(dirTo)        if same:            print('Error:dirFrom same as dirto')        else:            return (dirFrom,dirTo)

if name=='main': import time distuple=getArgs() if distuple: print('Copying...') start=time.clock() fcount,dcount=copytree(*distuple) print('Copied',fcount,'files',dcount,'directions',end=' ') print('in ',time.clock()-start,'seconds')

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