utils.py 文件源码

def url_replace_param(url, name, value):
    """
    Replace a GET parameter in an URL
    """
    url_components = urlparse(force_str(url))

    params = parse_qs(url_components.query)

    if value is None:
        del params[name]
    else:
        params[name] = value

    return mark_safe(urlunparse([
        url_components.scheme,
        url_components.netloc,
        url_components.path,
        url_components.params,
        urlencode(params, doseq=True),
        url_components.fragment,
    ]))