如何在Django中计算视图的执行时间？

import time
from django.utils.deprecation import MiddlewareMixin

class ExecutionTimeMiddleware(MiddlewareMixin):
    def process_view(self, request, view_func, view_args, view_kwargs):
        request._start_time = time.time()

    def process_response(self, request, response):
        if hasattr(request, '_start_time'):
            execution_time = time.time() - request._start_time
            print("视图执行时间：{}秒".format(execution_time))
        return response

MIDDLEWARE = [
    ...
    'myapp.middleware.ExecutionTimeMiddleware',
    ...
]