AttributeError when using request.post () in a `with` statement

A / C requests python documentation , where the operator can be used with higher speed requests.

with requests .get (' http://httpbin.org/get ', stream = True) as r: # Do something with the response here.

So why does this return "Attribute Error"?

Traceback (most recent call last):
File "<pyshell#101>", line 1, in <module>
with requests.post(url,headers=headers,data=data,stream=True) as post_res:
AttributeError: __exit__

      

        
        
        
      

    

code:

with requests.post(url,headers=headers,data=data,stream=True) as post_res:
    print(b'Name' in post_res.content)

      

        
        
        
      

    

PS This works fine without the "c" instruction.