Although I really think that if you can copy and paste, you don’t need to know Python to follow the guides available on this website, as soon as you start wanting to modify the examples and do things on your own, that’s when knowing a bit of Python will come in handy. Besides being a great addition to your CV, Python is really a lot of fun.
To get you started I recommend DigitalOcean’s How To Code in Python 3 tutorial series, which is available for free, both in web format and as eBook. I really think this should give you enough knowledge to hit the ground running on your journey to learning Machine Learning.
The only pre-requisite to start coding now is to have Python Installed on your computer.