python 拷贝特定后缀名文件,并保留原始目录结构的实例

#!/usr/bin/python# -*- coding: UTF-8 -*- import osimport shutildef cp_tree_ext(exts,src,dest):  """  Rebuild the director tree like src below dest and copy all files like XXX.exts to dest   exts:exetens seperate by blank like "jpg png gif"  """  fp={}  extss=exts.lower().split()  for dn,dns,fns in os.walk(src):    for fl in fns:      if os.path.splitext(fl.lower())[1][1:] in extss:        if dn not in fp.keys():          fp[dn]=[]        fp[dn].append(fl)  for k,v in fp.items():      relativepath=k[len(src)+1:]      newpath=os.path.join(dest,relativepath)      for f in v:        oldfile=os.path.join(k,f)        print("拷贝 ["+oldfile+"] 至 ["+newpath+"]")        if not os.path.exists(newpath):          os.makedirs(newpath)        shutil.copy(oldfile,newpath)#用法如下：##cp_tree_ext(exts,src,dest)##exts:以空格分隔的字符串，可多个拓展名，如"bat txt"#src:原目录#dest:目标目录，如果不存在，则建立cp_tree_ext('doc docx','/home/lincoln/python/copy/source','/home/lincoln/python/copy/target')