如何在另一个字典中将字典附加为键的值？

Question

I have a dictionary:

accessToken = {'acces' : self.access , 'expires_in' :self.expires}

i want that it will be the value of firstKey in my second payload

i tried it

payload     =  {"firstKey" : json.dumps(accessToken) , "encodingVersion" : "1",
                "headerVersion" : "3" , "username" : username }

i want to have something like this

{'firstKey': {'acces' : self.access , 'expires_in' :self.expires},"encodingVersion" : "1",
  "headerVersion" : "3" , "username" : username }

UPDATE 1

and i tried

payload     =  {"firstKey" : accessToken , "encodingVersion" : "1",
                "headerVersion" : "3" , "username" : username }

and sent it in a form with FormRequest, but it was sent like

headerVersion=3&username=usernameValue&encodingVersion=1&firstKey=selfaccess_value&firstKey=self_expires_value

UPDATE 2

I send my query in Scrapy like this

yield  FormRequest(link, method="POST", formdata=payload
                          , callback=self.myFunction)

Answer 1

Just add it to the dictionary normally using the variable name accessToken as the value:

>>> accessToken = {'acces' : "self.access" , 'expires_in' :"self.expires"}
>>> payload     =  {"firstKey" : accessToken , "encodingVersion" : "1",
...                 "headerVersion" : "3" , "username" : "username" }
>>> 
>>> payload
{'headerVersion': '3', 'username': 'username', 'encodingVersion': '1', 'firstKey': {'acces': 'self.access', 'expires_in': 'self.expires'}}
>>> 

Answer 2

{'firstKey': accessToken }

is perfectly ok. You can also add more keys and values if needed

Answer 3

You can simply use:

payload     =  {"firstKey" : accessToken , "encodingVersion" : "1",
                "headerVersion" : "3" , "username" : username }

In python, dictionary values can be of any type, including a dictionary.

Answer 4

Why don't you just add a key to the dictionary with a dictionary as its value, ie:

d1 = {"key1": "val1", "key2": "val2"}
d2 = {"key3": "val3", "key4": "val4"}

d1["key5"] = d2

print(d1)
{"key1": "val1", "key2": "val2", "key5": {"key3": "val3", "key4": "val4"}}

Answer 5

I resolved my problem by changing

yield  FormRequest(link,headers=headers, formdata=payload, meta = meta ,  method="POST"
                          , callback=self.myFunction)

to

yield  FormRequest(link,headers=headers, body=str(payload), meta = meta ,  method="POST"
                          , callback=self.myFunction)