Hey there! Let's break down what's causing that error and fix it quickly.

The Root Cause #

Your issue comes from a common mix-up between parsed Python objects and JSON strings:

• When you run json.loads(connection.getresponse().read().decode('utf-8')), you're converting the API's JSON response into a Python dictionary (stored in response). This is exactly what you want, since dictionaries let you access values with keys like ["matchday"].
• But then you do json = json.dumps(response) — this takes that dictionary and converts it back into a JSON-formatted string. Now json is no longer a dictionary, it's a string, and strings only accept integer indices (like my_string[0]), hence the TypeError.

The Fix #

Just remove the line that converts the dictionary back to a string, and directly access the value from the parsed response dictionary. Here's your corrected code:

def search_team():
    import http.client
    import json
    connection = http.client.HTTPConnection('api.football-data.org')
    headers = {
        'X-Auth-Token': 'c4c0ba9c685041aca2fase3d1b2fa5e585',
        'X-Response-Control': 'minified'
    }
    connection.request('GET', '/v1/competitions/445/leagueTable', None, headers )
    # Parse the JSON response into a Python dictionary
    response = json.loads(connection.getresponse().read().decode('utf-8'))
    # Directly return the matchday value from the dictionary
    return response["matchday"]

if __name__ == '__main__':
    app.run()

Extra Note #

If you need to return a properly formatted JSON response (for example, in a Flask app), instead of returning the raw integer, you can use Flask's jsonify function:

from flask import jsonify

# ... inside search_team ...
return jsonify({"matchday": response["matchday"]})

This ensures the response is structured correctly for any clients consuming your endpoint.

内容的提问来源于stack exchange，提问作者You Awesum