util.py 文件源码

def copy_tree(src,tgt, ignore_patterns=None, symlinks=False):
    """Copy the tree at src to tgt. This will first remove tgt if it
    already exists."""
    if verbose(1):
        msgb("COPYTREE", tgt + " <- " + src)
    if not os.path.exists(src):
        error_msg("SRC TREE DOES NOT EXIST", src)
        raise Exception
    if os.path.exists(tgt):
        if verbose(1):
            msgb("Removing existing target tree", tgt)
        shutil.rmtree(tgt, ignore_errors=True)
    if verbose(1):
        msgb("Copying to tree", tgt)
    if ignore_patterns:
        sp = shutil.ignore_patterns(ignore_patterns)
    else:
        sp = None
    shutil.copytree(src,tgt,ignore=sp, symlinks=symlinks)
    if verbose(1):
        msgb("Done copying tree", tgt)