New to Python

I'm new to Python since I tested out of SI 502 so it's somewhat new to me. I know Java and C# so I'm familiar with programming but have no experience reading in data and using code to change the data. I'm finding that some of the functions seem really obvious but I wouldn't think I'd be able to use them because I'm still in the mindset of Java where rules are much more stringent. Things like requiring your variables to be defined and spacing not mattering are what I'm used to, so changing my mindset is a bit of an adjustment. Either way, I love learning new things, and I especially like coding so I'm looking forward to this challenge and hope I don't get confused too much. It seems like there is quite a few resources out there to help me learn what I need/want to learn so I'm going to dive in head first.