Receive API body POST by Python - json

Question

I have a problem with API POST, can you help me?
import requests
import json
url = 'http://xxx/api/getTotalPrice'
param = dict(itineraryType=1,
departureAirportCode='HAN',
destinationAirportCode='DLI',
departureDate='2020-12-30T14:00',
returnDate='2020-12-30T09:00',
adult=1,
children=1,
infant=1
)
resp = requests.post(url=url, params=param)
u_data = resp.json()
print(u_data)
I want to receive data from API POST. This is body API and this made error.
Here, this is error
C:\Users\Admin\PycharmProjects\untitled\venv\Scripts\python.exe C:/Users/Admin/PycharmProjects/untitled/venv/test.py
Traceback (most recent call last):
File "C:\Users\Admin\PycharmProjects\untitled\venv\test.py", line 17, in <module>
u_data = resp.json()
File "C:\Users\Admin\PycharmProjects\untitled\venv\lib\site-packages\requests\models.py", line 900, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Users\Admin\AppData\Local\Programs\Python\Python39\lib\json\__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\Admin\AppData\Local\Programs\Python\Python39\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\Admin\AppData\Local\Programs\Python\Python39\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Process finished with exit code 1
I can get data from POST API without body, but with body, I cannot.
Can you help to fix code?
Many thanks!
P/S:
Here value which I want to get
{
"departureFlight": {
"totalPrice": 1896000.0,
"airlineCode": "VN"
},
"returnFlight": {
"totalPrice": 3263800.0,
"airlineCode": "VJ"
}
}

Answer 1

OK, I have an answer.
data = {'itineraryType':1,'departureAirportCode':'HAN','destinationAirportCode':'DLI','departureDate':'2020-12-30T15:00','returnDate':'2020-12-30T09:00','adult':1,'children':1,'infant':1}
headers={'Content-type':'application/json', 'Accept':'application/json'}
resp = requests.post(url=url, json=data, headers=headers)
u_data = resp.json()
print(u_data)
change dict(...) to {...} and set headers.