input: Write a Python function to fetch and print the names and prices of the top 10 cryptocurrencies using the CoinMarketCap API.
  assert fetch_top_10_cryptos() is None
output: import requests
  
  def fetch_top_10_cryptos():
      url = 'https://api.coinmarketcap.com/v1/ticker/?limit=10'
      response = requests.get(url)
      data = response.json()
      
      for crypto in data:
          name = crypto['name']
          price = crypto['price_usd']
          print(f"Name: {name}, Price: ${price}")