How to access market price from Python? I am struggling to get access to the kind of information I have on cryptowat.ch. For example on Kraken there is an API, but I didn't find how to get the past history, the volume information, etc. 

Is there any straightforward solution for this?
Perhaps you can use the Python library CCXT:

https://github.com/kroitor/ccxt

It offers an homogeneous interface for accessing market data at different exchanges like Kraken, Coinbase, Bitstamp, etc...