title: Getting the Average Value for each Group of a pandas Dataframe
body: <p>I successfully managed to scrape futbin.com for time series price data of Fifa 19 players. I have now got over 200'000 rows with player and price data. For each player I have about 17 different prices (with a respective timestamp)<a href="https://i.stack.imgur.com/218Io.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/218Io.png" alt="."></a></p>
  
  <p>I would now like to make a new dataframe with only one row per player and the price should be the average price over time for this specific player. Each player has got a unique "Futbin_ID" number.
  Until now I was unable to figure out how to do this...
  I would really appreciate it if someone could help me out...</p>