Addition of Two Matrices in Python Language
- Zaheer Abbasi
- Sep 2, 2023
- 2 min read
To add two matrices in Python, you can use nested loops to iterate through the elements of the matrices and add corresponding elements together. Make sure that the dimensions of the two matrices are the same, i.e., they have the same number of rows and columns.
Function Definition: The code starts by defining a Python function named add_matrices that takes two matrices as its input parameters. This function will be responsible for adding the two matrices together.
Dimension Check: Inside the add_matrices function, it first checks if the dimensions of the two input matrices are the same. It does this by comparing the number of rows and columns in both matrices. If the dimensions are not the same, it returns a message indicating that matrices must have the same dimensions for addition.
Result Matrix Initialization: If the dimensions of the matrices are indeed the same, the code initializes an empty result matrix with the same dimensions as the input matrices. This result matrix will store the sum of the two input matrices.
Nested Loops for Addition: The code uses nested for loops to iterate through the rows and columns of the input matrices. It begins with the outer loop, which iterates through the rows, and inside it, there's an inner loop that iterates through the columns.
Elementwise Addition: Within the nested loops, the code performs element-wise addition of the corresponding elements from the two input matrices. It adds the element at the current position in matrix1 to the element at the same position in matrix2 and stores the result in the corresponding position of the result matrix.
Returning the Result: After the loops have completed, the code returns the result matrix, which now contains the sum of the two input matrices.
Example Matrices and Execution: Finally, the code provides an example of two matrices, matrix1 and matrix2, and uses the add_matrices function to add them together. The resulting matrix, result_matrix, is printed row by row to display the sum of the input matrices.
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