django如何在views.py中使用减法

from django.http import HttpResponse

def subtract(request):
    # 在这里执行减法操作
    result = 10 - 5
    return HttpResponse("The result of subtraction is: {}".format(result))

from django.urls import path
from .views import subtract

urlpatterns = [
    path('subtract/', subtract, name='subtract'),
]

The result of subtraction is: 5