django中，我想判断一个group是否有指定的权限，但是遇到一点问题

view代码

from django.contrib.auth.models import User,Group,Permission
from django.db.models import Q
def users(request):
    users = User.objects.filter(is_active=1).exclude(id=request.user.id)
    groups = Group.objects.exclude(Q(name='customer') | Q(name='vendor') | Q(name='labour'))
    permissions = Permission.objects.all()

    return {
        'all_users': users,
        'all_groups' : groups,
        'permissions' : permissions
    }

template代码

<input type="checkbox" name="group_{{group.id}}_permission_{{permission.id}}" {%if 'condition'  %} checked="checked" {% endif %} />

@eylle