I'm importing an .csv file (exported from maple) in python with a matrix (10 by 10) with variables in each element. For example: a*b-c is in (0,0). How can I define a,b and c such that these values are passed to the matrix?

I already tried a = 1, b =2 etc. before I import the .csv matrix but this doesn't work.

```
import numpy as np
my_matrix = np.genfromtxt('MyMatrix.csv', dtype='unicode', delimiter=',')
```

I expect the variables to be passed to the matrix and the matrix to be of type float to be able to take the inverse of it.