This will work like the coincrawler in a more general way using the BeautifulSoup module.

coincrawler-beautiful.py

import urllib.parse
import urllib.request
from bs4 import BeautifulSoup
from pprint import pprint

def urlReader(url):
    print("")
    print("fetching data from coinmarketcap.com")
    req = urllib.request.Request(url)
    resp = urllib.request.urlopen(req)
    respData = resp.read()
    soup = BeautifulSoup(respData, 'html.parser')
    return soup

def main():
    url= 'http://coinmarketcap.com'
    firstPrices=10
    soup = urlReader(url)
    i=0
    dict={}
    currencies=['Bitcoin', 'Ethereum', 'Bitcoin Cash', 'IOTA', 'Ripple', 'Dash', 'Litecoin', 'Bitcoin Gold', 'Monero', 'Cardano']

    #Using soups.select to find the price
    print("")
    print("writing dictonary...")
    print("")
    for price in soup.select('.price'):
        #print first 10 statements
        if i>=firstPrices:
            break
        dict[currencies[i]] = (price['data-usd'] + '$')
        i = i + 1
    pprint(dict)
main()