This repository contains a Python implementation of a cursor for NumPy matrices. The cursor allows you to conveniently move through a matrix and read or modify its values.

The cursor class has the following methods:

• __init__(self, matrix): Initializes the cursor with a NumPy matrix.
• left(self, steps=1): Moves the cursor left by steps columns.
• right(self, steps=1): Moves the cursor right by steps columns.
• up(self, steps=1): Moves the cursor up by steps rows.
• down(self, steps=1): Moves the cursor down by steps rows.
• move(self, row_steps, col_steps): Moves the cursor by row_steps rows and col_steps columns.
• set(self, row, col): Set the cursor by row rows and col columns.
• coordinates: Returns the current row and column coordinates of the cursor.
• isEmpty: Returns True if the value of the matrix at the current cursor position is zero, and False otherwise.
• setItem(self, item): Setting the value of the cursor cell by item.
• __repr__(self): Returns a string representation of the value of the matrix at the current cursor position.
• __str__(self): Returns a string representation of the value of the matrix at the current cursor position.

The implementation also includes error checking to prevent moving the cursor beyond the boundaries of the matrix.