main.py

#A simple scraping program that provides up-to-date information about 100 cryptocurrencies
#
import requests
from bs4 import BeautifulSoup
import time
import os
from colorama import Fore, init
from os import system, name
import sys
#
sys.argv
#Init from colorama
init()
#

url = "https://coinmarketcap.com"

#
def clear():

    # for windows
    if name == 'nt':
        _ = system('cls')

    # for mac and linux(here, os.name is 'posix')
    else:
        _ = system('clear')
#
#
def checkprice():
    page = requests.get(url)
    soup = BeautifulSoup(page.content, "lxml")

    name = soup.select(".eTVhdN .cmc-link")
    marketcap = soup.select(".cmc-table__cell--sort-by__market-cap div")
    price = soup.select(".cmc-table__cell--sort-by__price .cmc-link")
    volume24 = soup.select(".cmc-table__cell--sort-by__price .cmc-link")
    supply = soup.select(".cmc-table__cell--sort-by__circulating-supply div")
    change24 = soup.select(".cmc-table__cell--sort-by__percent-change-24-h div")

    cryptoinfo = {}
    for index in range(len(name)):
        cryptoinfo.update({name[index].text.lower() : [name[index].text,
        "Market capacity: " + marketcap[index].text,
        "Price: " + price[index].text,
        "Volume (24h): " + volume24[index].text,
        "Supply: " + supply[index].text,
        "Change (24h): " + change24[index].text,
        ]})
    clear()
    print("------------------------------")
    for value in cryptoinfo[cryptoanswer]:
        print(f"{Fore.GREEN} {value} {Fore.WHITE}")
        print("------------------------------")
#
#
if len(sys.argv) > 1:
    cryptoanswer = " ".join(sys.argv[1:]).lstrip().rstrip().lower()
else:
    cryptoanswer = input(f"Cryptocurrency: ").lower()
#
while True:
    checkprice()
    time.sleep(5)
#