get_coingecko_data.py

def get_coingecko_data(crypto_ids, crypto_abbreviations):
    # define the base url and another piece that will be added later
    base = 'https://api.coingecko.com/api/v3/simple/price?ids='
    vs_currencies_string= '&vs_currencies='

    # determine the number of ids in the list. This will help us know how many commas to add to the url
    id_remaining = len(crypto_ids)

    # loop through each coin and append its id to the url. Decrease id_remaining each iteration, add a comma to the url if it is needed
    for coin in crypto_ids:
        base += coin
        id_remaining -= 1
        if id_remaining > 0:
            base += ','

    # add the second predetermine piece to the url
    base += vs_currencies_string

    # determine the number of abbreviations in the id file. This will help us know how many commas to add to the url
    vs_remaining = len(crypto_abbreviations)

    # loop through each coin and append its abbreviation to the url. Decrease vs_remaining each iteration, add a comma to the url if it is needed
    for vs in crypto_abbreviations:
        base += vs
        vs_remaining -= 1
        if vs_remaining > 0:
            base += ','

    # print url to verify it looks correct
    print(base)

    # request the constructed url to get the data
    request = requests.get(base)  
    results_dict = json.loads(request.text)
    # print(results_dict['bitcoin-cash'])
    
    return(results_dict)