Need some advice on ML tools to use for a personal project

Here's how I frame the problem: given a reddit post in a specific topic (like the Xbox One), decide whether the comments in the post favor or dislike the topic and by how much.

I know the basics of ML, but what I don't know are the good tools available right now. I need libraries, preferably in Python, for:

• parsing
• clustering
• classification

What should I use?