Have you ever wondered if you can earn profit by buying a coin at one exchange and selling it at another. Well, I've made a simple python script to tell you just that. It queries ask and bid rates from 4 different exchanges, which are, Cryptopia, Bittrex, HitBTC and Poloniex, to show you the results. This kind of trading is known as arbitrage trading. You can find my script at https://github.com/HamidMushtaq/steemtools/blob/master/getarbitragerates.py, and it works with both Python 2 and 3.

Here is one sample output of the program. I asked it how much possible profit I can get by trading 10 litecoins. I asked that two times, and both times, it said that it is best to buy from Cryptopia and sell it at Bittrex. Here, of course I am ignoring the transaction fees. Withdrawal fees are not included either, but they can be avoided anyway, by keeping stock of both litecoins and bitcoins on both exhanges.

![](https://steemitimages.com/DQmdFiBzm92wHwFRCdDEVJfMf8rzY9a64DFuMPSvcV18NKw/image.png)

One interesting result is that of STEEM, which I queried the third time. Apparently, I can get a lot of profit by buying from Poloniex and selling it at HitBTC. However, don't be fooled by this, because if you check, you'll notice that the wallet of STEEM at HitBTC is still under maintenance. So, basically, this type of trade is not even possible.

In my Python program, I have got information from these exchanges, using their REST APIs. The information is then extracted from the resulting output in JSON form. Although, in my code, I have listed the sources from where I got help for these APIs, here I am listing them again.

1. **Cryptopia**: https://www.cryptopia.co.nz/Forum/Thread/255
2. **Poloniex**: https://poloniex.com/support/api/
3. **Bittrex**: https://bittrex.com/home/api
4. **HitBTC**: https://api.hitbtc.com/?python#rest-api-reference
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I hope that you will find this program useful. If you have any questions relating to the code, I would be happy to answer them.

**UPDATE**
I have now also added Binance into the list of exchanges. So, now rates from 5 exchanges are shown.