Getting "name 'get_weather' is not defined error and no json_data returned?

[snippsat]

In the error at the bottom it shows Python 37, I only have 3.9. installed.

Click down in left corner then Python: Select Interpreter will show up an choice Python 3.9
Now it use version the come with Microsoft Visual Studio stand alone,and not the same as Vs Code.
Some setup tips here VS Code from start

You most have key.ini in same folder as you run script,or give path where it is.
Add input last not before the function,so like this.

import requests
from configparser import ConfigParser

def get_weather(city, api_key):
    api = f"https://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}"
    json_data = requests.get(api).json()
    return json_data

def get_api_key():
    config = ConfigParser()
    config.read('key.ini')
    api_key = config['key']['api_key']
    return api_key

if __name__ == '__main__':
    city = input("City where you are?: ")
    state = input("State where you are? ")
    city = f'{city},{state}'
    weather = get_weather(city, get_api_key())
    print(weather['name'])
    print(weather['main']['temp'])
    print(weather[ 'weather'][0]['description'])

Test.

# Version
G:\div_code\answer\weather
λ python -V
Python 3.9.5

# Files in folder
G:\div_code\answer\weather
λ ls
key.ini  open_weather.py

# Run
G:\div_code\answer\weather
λ python open_weather.py
City where you are?: Houston
State where you are? Texas
Houston
296.82
mist