Twitter API Redirects After Authorization But Won't Give Me a PIN

I am trying to block a user account with the Twitter API through Python. Here's what my method looks like:

def block_user():

payload = {"target_user_id": "amazon"}

# Get request token
request_token_url = "https://api.twitter.com/oauth/request_token"
oauth = OAuth1Session(consumer_key, client_secret=consumer_secret,)

try:
    fetch_response = oauth.fetch_request_token(request_token_url)
except ValueError:
    print(
        "There may have been an issue with the consumer_key or consumer_secret you entered."
    )

resource_owner_key = fetch_response.get("oauth_token")
resource_owner_secret = fetch_response.get("oauth_token_secret")
print("Got OAuth token: %s" % resource_owner_key)

# Get authorization
base_authorization_url = "https://api.twitter.com/oauth/authorize"
authorization_url = oauth.authorization_url(base_authorization_url)
print("Please go here and authorize: %s" % authorization_url)
verifier = input("Paste the PIN here: ")

# Get the access token
access_token_url = "https://api.twitter.com/oauth/access_token"
oauth = OAuth1Session(
    consumer_key,
    client_secret=consumer_secret,
    resource_owner_key=resource_owner_key,
    resource_owner_secret=resource_owner_secret,
    verifier=verifier,
    # I tried this, it didn't work
    #oauth_callback='oob',
)
oauth_tokens = oauth.fetch_access_token(access_token_url)

access_token = oauth_tokens["oauth_token"]
access_token_secret = oauth_tokens["oauth_token_secret"]

# Make the request
oauth = OAuth1Session(
    consumer_key,
    client_secret=consumer_secret,
    resource_owner_key=access_token,
    resource_owner_secret=access_token_secret,
)

# Making the request
response = oauth.post(
    "https://api.twitter.com/2/users/{}/blocking".format(id), json=payload
)

if response.status_code != 200:
    raise Exception(
        "Request returned an error: {} {}".format(response.status_code, response.text)
    )

print("Response code: {}".format(response.status_code))

# Saving the response as JSON
json_response = response.json()
print(json.dumps(json_response, indent=4, sort_keys=True))

In the terminal when I run the script, I get this:

Got OAuth token: 9SL...BGo
Please go here and authorize: https://api.twitter.com/oauth/authorize?oauth_token=9SL...BGo
Paste the PIN here: 

So I go to the URL and it asks me to authorize the app. I authorize it, and then get redirected immediately to the redirect page of the Twitter API app settings (default.com in this case). I don't get shown a PIN to put into the prompt, I don't see any success message or anything, it just redirects immediately. Can't find anyone else with that issue using traditional search terms.

Any ideas?

You need to add the following URL parameters to your auth/request_token URL. For me, that meant changing this line (the third line in my code block):

request_token_url = "https://api.twitter.com/oauth/request_token"

to this:

request_token_url = "https://api.twitter.com/oauth/request_token?oauth_callback=oob&x_auth_access_type=write"

I had tried using oauth_callback=oob in a few other places including my OAuth1Session object and on the authentication URL. Needs to be on the request_token URL.