This is a simple scraper for get a list of crypto currency prices

mini_crypto_scraper.py

import requests
import concurrent.futures
from bs4 import BeautifulSoup
from pprint import pprint
from re import sub

sites = [
    ('Bitcoin', 'https://coinmarketcap.com/currencies/bitcoin/'),
    ('Ethereum', 'https://coinmarketcap.com/currencies/ethereum/'),
    ('BNB', 'https://coinmarketcap.com/currencies/bnb/'),
    ('Cardano', 'https://coinmarketcap.com/currencies/cardano/'),
    ('XRP', 'https://coinmarketcap.com/currencies/xrp/'),
    ('Solana', 'https://coinmarketcap.com/currencies/solana/'),
    ('Terra (Luna)', 'https://coinmarketcap.com/currencies/terra-luna/'),
    ]

def sort_crypto_price(crypto_data):
    return sorted(crypto_data, key= lambda k:k['price'], reverse=True)

def get_request(crypto_url, crypto_name):
    res = requests.get(crypto_url)
    return (crypto_name, res.text)

def get_data(crypto_sites):
    with concurrent.futures.ThreadPoolExecutor() as executor:
        futures = []
        cripto_data = []
        for cs in crypto_sites:
            futures.append(executor.submit(get_request, crypto_url=cs[1], crypto_name=cs[0]))
        for future in concurrent.futures.as_completed(futures):
            cripto_data.append(future.result())
        return cripto_data

def convert_str_to_decimal(price: str) -> float:
    return float(sub(r'[^\d.]', '', price))

def get_crypto_data(crypto_data):
    values = []
    CRYPTO_NAME = 0
    TEXT_DATA = 1
    for cd in crypto_data:
        soup = BeautifulSoup(cd[TEXT_DATA], 'html.parser')
        price = soup.select('.priceValue')
        values.append(
            {'cripto': cd[CRYPTO_NAME],
            'price': convert_str_to_decimal(price[0].find('span').getText())})
    return values

data_sites = get_data(sites)

sorted_data = sort_crypto_price(get_crypto_data(data_sites))

pprint(sorted_data)

requirements.txt

beautifulsoup4==4.10.0
certifi==2021.10.8
charset-normalizer==2.0.11
idna==3.3
requests==2.27.1
soupsieve==2.3.1
urllib3==1.26.8

Steps to use this code:

1. Download files or copy the code
2. Install dependencies: pip install -r requirements.txt
3. Execute the file: python3 mini_crypto_scraper.py

Output:

[{'cripto': 'Bitcoin', 'price': 44031.8},
 {'cripto': 'Ethereum', 'price': 3149.67},
 {'cripto': 'BNB', 'price': 434.21},
 {'cripto': 'Solana', 'price': 117.81},
 {'cripto': 'Terra (Luna)', 'price': 58.97},
 {'cripto': 'Cardano', 'price': 1.24},
 {'cripto': 'XRP', 'price': 0.86}]

If you have a suggest, please write below :)