I have a file with a list of elements inside the square of a Quadratic field, i.e. QQ(sqrt[13])^2. The file looks like [[2 + sqrt[13],4 - 2*sqrt[13]],[2,sqrt[13]],...]. I want to import this file into a single matrix over the field, in the previous example F. = QuadraticField(13). Currently, I read everything in as a string then convert to the matrix, but there must be an easier way to do this. I am somewhat new to python programming in general.