def __init__(self, package, version):
        """Construct a new requirement.

        :param package: the package name.
        :param version: a semver compatible version specification.
        """
        self.package = package
        self.version = version
        if self.version and not re.match(r"[<=>~]", version[:2]):
            self.version = "=={}".format(self.version)
def add_group():
    form = AddGroupForm()
    if form.validate_on_submit():
        form.save()
        flash(_("Group added."), "success")
        return redirect(url_for("management.groups"))

    return render_template("management/group_form.html", form=form,
                           title=_("Add Group"))