def treecopy(src='', dst='', mask='*.*'):
    names = os.listdir(src)
    if os.path.exists(dst) != True: 
	os.mkdir(dst)
	print 'Create dir', dst
    for name in names:
        srcname = os.path.join(src, name)
        dstname = os.path.join(dst, name)
        try:
            if os.path.isdir(srcname):
                treecopy(srcname, dst, mask)
            else:
                if fnmatch.fnmatch(`name`, `mask`):
		    if os.path.exists(dstname) == True:
			print 'File exists', dstname
			continue
                    shutil.copy2(srcname, dstname)
        except (IOError, os.error), why:
            print "Can't copy %s to %s: %s" % (`srcname`, `dstname`, str(why))