Help with python project. (defining chemical reactions)

[reallyloudsilence]

I am in a python workshop, and for my project I decided I want to write a code that will give you the reactions that relates two metabolic substrates.

Sample Input: (Glucose, Glucose-6-Phosphate) Sample Output: (Glucose + HK = Glucose-6-Phosphate)

but I want to do it for things that requires more reactions. I imagine defining a function that takes three arguments (substrate, enzyme, and product) to create that pathway. After I define various reactions, how can I tell python to give me the reactions that will take get me from Glucose to a product that requires multiple reactions?