Django源码分析——shotcuts

 1 def render(request, *args, **kwargs):
 2     """
 3     Returns a HttpResponse whose content is filled with the result of calling||返回的HttpResponse的内容充满了调用的结果
 4     django.template.loader.render_to_string() with the passed arguments. 
 5     Uses a RequestContext by default.   使用RequestContext默认情况下。
 6     """
 7     httpresponse_kwargs = {
 8         ‘content_type‘: kwargs.pop(‘content_type‘, None),
 9         ‘status‘: kwargs.pop(‘status‘, None),
10     }
11 

**kwargs  的用法是输入的参数变为一个字典

12     if ‘context_instance‘ in kwargs:
13         context_instance = kwargs.pop(‘context_instance‘)
14         if kwargs.get(‘current_app‘, None):
15             raise ValueError(‘If you provide a context_instance you must ‘
16                              ‘set its current_app before calling render()‘)
17     else:
18         current_app = kwargs.pop(‘current_app‘, None)
19         context_instance = RequestContext(request, current_app=current_app)
20 
21     kwargs[‘context_instance‘] = context_instance
22 
23     return HttpResponse(loader.render_to_string(*args, **kwargs),
24                         **httpresponse_kwargs)

a =10
if a:
    raise ValueError(‘a == 10‘)