coinmarketcap is an APACHE licensed library written in Python providing an easy to use wrapper around the coinmarketcap.com API. This library has been tested with Python 2.7.x and Python 3.6.x and uses.
To install the library：
$ pip install coinmarketcap
To get the steem/SBD price
from coinmarketcap import Market
coinmarketcap = Market()
Steem_market_price_USD= float(coinmarketcap.ticker('steem', convert='USD')[0]['price_usd'])
SBD_market_price_USD= float(coinmarketcap.ticker('steem-dollars', convert='USD')[0]['price_usd'])
print('Steem_market_price_USD',Steem_market_price_USD)
print('SBD_market_price_USD',SBD_market_price_USD)