Loop issue with an API about Bitcoin price

Question

I use an API to have an update of the Bitcoin price.

The following code give me a lot of informations :

resp = requests.get('https://www.alphavantage.co/query', params={
    'function': 'CURRENCY_EXCHANGE_RATE',
    'from_currency': 'BTC', 
    'to_currency': 'EUR',
    'apikey': AV_API_KEY
})
resp

resp.json()

output :

{'Realtime Currency Exchange Rate': {'1. From_Currency Code': 'BTC',
  '2. From_Currency Name': 'Bitcoin',
  '3. To_Currency Code': 'EUR',
  '4. To_Currency Name': 'Euro',
  '5. Exchange Rate': '16006.64235500',
  '6. Last Refreshed': '2020-11-30 14:12:04',
  '7. Time Zone': 'UTC',
  '8. Bid Price': '16006.64235500',
  '9. Ask Price': '16006.65069000'}}

I want to only have the 5. Exchange rate and to update the price every 10 seconds, so I tried this :

resp = requests.get('https://www.alphavantage.co/query', params={
    'function': 'CURRENCY_EXCHANGE_RATE',
    'from_currency': 'BTC', 
    'to_currency': 'EUR',
    'apikey': AV_API_KEY
})
resp

resp.json()
a=resp.json() 

def update_price_10sec():
    print(a.get('Realtime Currency Exchange Rate').get('5. Exchange Rate')) 

while True:
    update_price_10sec()
    time.sleep(10) #make function to sleep for 10 seconds

output is then :

16006.64235500
16006.64235500
16006.64235500
16006.64235500
16006.64235500
(etc...)

So the problem is that the price is no more updated, and every 10 sec I have a copy paste of the last known price. Do someone know how can I fix it ?

Answer 1

Seem you need to put the request inside the while loop.

def GET():
    resp = requests.get('https://www.alphavantage.co/query', params={
        'function': 'CURRENCY_EXCHANGE_RATE',
        'from_currency': 'BTC', 
        'to_currency': 'EUR',
        'apikey': AV_API_KEY
    })

    return resp.json() 

def update_price_10sec(a):
    print(a.get('Realtime Currency Exchange Rate').get('5. Exchange Rate')) 

while True:

    update_price_10sec(GET())
    time.sleep(10) #make function to sleep for 10 seconds