It is definitely something to consider, and while I don't think translating Python to Common Lisp would be all that difficult, I do think that getting the C lib

It is definitely something to consider, and while I don't think translating Python to Common Lisp would be all that difficult, I do think that getting the C libraries that Python wraps working with CL might be a significant effort. A lot of the good libraries like csv, re, etc, are implemented in C if I remember correctly.