This is not correct. The correct behavior would be for Python to throw a ValueError, specifying the mismatch in array shapes. Indeed, this is the behavior if B is anything but a column or row matrix.

User has to choose row and column, then the element in that row and column is changed whit the entered value. It is also possible to refer to the matrix as self.matrix[i][j], whitout using this ...

Summary <p>This chapter examines the seven variants of sparse matrices implemented in the Scipy library. These seven variants include: coordinate sparse matrix, compressed sparse column matrix, ...