48 

    49 def copytree(src, dst, copyfile):

    50     """Copy a directory tree, files are copied using 'copyfile'."""

    51     names = os.listdir(src)

    52     os.mkdir(dst)

    53 

    54     for name in names:

    55         srcname = os.path.join(src, name)

    56         dstname = os.path.join(dst, name)

    57         if os.path.isdir(srcname):

    58             copytree(srcname, dstname, copyfile)

    59         elif os.path.isfile(srcname):

    60             copyfile(srcname, dstname)

    61         else:

    62             raise IOError("Not a regular file: %r" % srcname)