def coerce(cls, string):
        """Create a :class:`Requirement` object from a given package spec."""
        match = re.match(cls.spec_regex, string)
        if not match:
            raise InvalidRequirementSpecError("could not parse requirement")
        package = match.group(1)
        if all(match.group(2, 3)):
            version = "".join(match.group(2, 3))
        else:
            version = None
        return cls(package, version)
def users():
    page = request.args.get("page", 1, type=int)
    search_form = UserSearchForm()

    if search_form.validate():
        users = search_form.get_results().\
            paginate(page, flaskbb_config['USERS_PER_PAGE'], False)
        return render_template("management/users.html", users=users,
                               search_form=search_form)

    users = User.query. \
        order_by(User.id.asc()).\
        paginate(page, flaskbb_config['USERS_PER_PAGE'], False)

    return render_template("management/users.html", users=users,
                           search_form=search_form)