SymPy is a well developed library with great support for various mathematical manipulations required in the field of Mathematics, Physics and Computer Science. Being completely in python its a little slow and hence the project SymEngine is being developed to act as a fast core for SymPy. I don’t have a lot of contribution in this project but I have read through some of its code which has been helpful in developing features for SymEngine.
A short description of My Pull Requests in SymPy:
PR #10714(Unmerged) - Added complete functionality for Inverse hyperbolic function
PR #10721(Merged) - Fixed typo in documentation of