Required parameter volume_percent missing, even though it is sent

[dchumash]

Plan

Premium

Country

US

Device

PC

Operating System

Windows 10

My Question or Issue

I am making calls to the Spotify API using the Python Requests module, attempting to change the volume of the player programmatically. 

My code:

def setVolume(volume=-1):
    if 0 > volume or volume > 100:
        return -1
    data={'volume_percent': volume}

    print(data)
    req = requests.put('https://api.spotify.com/v1/me/player/volume', data=data, headers={'Content-Type': 'application/json', 'Authorization': 'Bearer ' + requestToken.access_token})
    print(req.request.body)
    
    if req.status_code == requests.codes.unauthorized:
        requestToken.access_token = requestToken()
        return setVolume(volume)
    print(req.text)
    return

When running the function, I get this printout:

{'volume_percent': 36} << data
volume_percent=36 << req.request.body
{
  "error" : {
    "status" : 400,
    "message" : "Required parameter volume_percent missing"
  }
} << req.text

[Peter_Schorn]

The volume percent should be present in the query string. Read the documentation.

[dchumash]

Correct, and as shown by the output, it is provided to the request and is sent to the API, which is why I am confused about the server saying it didn't receive the data

[Peter_Schorn · Accepted solution]

You're sending the volume request in the HTTP body, not in the query string. Read the requests documentation.