Need to build a web base ERP, should I go with PHP or Python?

I need to build a web base ERP (cloud it too fancy), I've been using PHP+JS+MySQL+jQuery+HTML for a few years, and I know how they work together. I know the limitation of PHP.

Since this is a new project, I'm pretty interested to try Python. I have never used Python to code, but by viewing some Python tutorial, I feel it's pretty simple and straight forward. However, I'm not sure if I should use it.

In PHP, I have to spend a lot of time sanitizing, escaping, parsing data and I felt tired of writing query in PHP. Not sure how Python handles SQL, can I write pure SQL in Python? Does it come with database interface?

If I don't use a framework, how complicated would it be with Python compared to PHP?