In the previous article, we have discussed Python Program to Check Whether a Matrix is a Scalar or Not

Given two matrixes and the task is to check if the given two matrixes are equal or not in Python.

**What is a matrix:**

A matrix is a rectangular sequence of numbers divided into columns and rows. A matrix element or entry is a number that appears in a matrix.

**Example:**

Above is the matrix which contains 5 rows and 4 columns and having elements from 1 to 20.

In this order, the dimensions of a matrix indicate the number of rows and columns.

Here as there are 5 rows and 4 columns it is called a 5*4 matrix.

**Examples:**

**Example1:**

**Input:**

Given first matrix : 5 2 0 0 5 0 0 0 5 Given second matrix : 5 2 0 0 5 0 0 0 5

**Output:**

The given first and second matrixes are equal.

**Example2:**

**Input:**

Given first matrix : 3 5 4 6 Given second matrix : 1 2 4 6

**Output:**

The given first and second matrixes are not equal.

## Program to Check Two Matrix are Equal or Not in Python

Below are the ways to check if the given two matrixes are equal or not in Python.

### Method #1: Using For Loop (Static Input)

**Approach:**

- Give the first matrix as static input and store it in a variable.
- Calculate the number of rows of the given first matrix by calculating the length of the nested list using the len() function and store it in a variable mtrxrows.
- Calculate the number of columns of the given first matrix by calculating the length of the first list in the nested list using the len() function and store it in a variable mtrxcolums.
- Give the second matrix as static input and store it in a variable.
- Take a variable say
**tempo**and initialize its value to zero. - Loop till the given number of rows using the For loop.
- Inside the For loop, Iterate till the given number of columns using another Nested For loop(Inner For loop).
- Check if the condition firstmatrix[n][m] is not equal to the secondmatrix[n][m] using the if conditional statement where n is the iterator value of the parent For loop and mÂ is the iterator value of the inner For loop.
- If the statement is true, then make the value of
**tempo**as 1. - Break the statement and exit the loop.
- Check if the value of tempo is equal to 1 using the if conditional statement.
- If the statement is true, then print “The given first and second matrixes are not equal.”
- Else print “The given first and second matrixes are equal.”
- The Exit of the Program.

**Below is the implementation:**

# Give the first matrix as static input and store it in a variable. fst_mtrx = [[5, 2, 0], [0, 5, 0], [0, 0, 5]] # Calculate the number of rows of the given first matrix by # calculating the length of the nested list using the len() function # and store it in a variable mtrxrows. mtrxrows = len(fst_mtrx) # Calculate the number of columns of the given matrix by # calculating the length of the first list in the nested list # using the len() function and store it in a variable mtrxcols. mtrxcols = len(fst_mtrx[0]) # Give the second matrix as static input and store it in a variable. scnd_mtrx = [[5, 2, 0], [0, 5, 0], [0, 0, 5]] # Take a variable say tempo and initialize its value to zero. tempo = 0 # Loop till the given number of rows using the For loop. for n in range(mtrxrows): # Inside the For loop, Iterate till the given number of columns using another # Nested For loop(Inner For loop). for m in range(mtrxcols): # Check if the condition firstmatrix[n][m] is not equal to the secondmatrix[n][m] using # the if conditional statement where n is the iterator value of the parent For loop # and mÂ is the iterator value of the inner For loop. if fst_mtrx[n][m] != scnd_mtrx[n][m]: # If the statement is true, then make the value of tempo as 1. tempo = 1 # Break the statement and exit the loop. break # Check if the value of tempo is equal to 1 using the if conditional statement. break if tempo == 1: # If the statement is true, then print "The given first and second matrixes are not equal." print("The given first and second matrixes are not equal.") else: # Else print "The given first and second matrixes are equal." print("The given first and second matrixes are equal.")

**Output:**

The given first and second matrixes are equal.

### Method #2: Using For loop (User Input)

**Approach:**

- Give the number of rows of the matrix as user input using the int(input()) function and store it in a variable.
- Give the number of columns of the matrix as user input using the int(input()) function and store it in another variable.
- Take a list and initialize it with an empty value using [] or list() to sayÂ
**gvnmatrix**. - Loop till the given number of rows using the For loop
- Inside the For loop, Give all the row elements of the given Matrix as a list using the list(),map(),int(),split() functions and store it in a variable.
- Add the above row elements list toÂ
**gvnmatrix**Â using the append() function. - Repeat the same for the second matrix.
- Take a variable say
**tempo**and initialize its value to zero. - Loop till the given number of rows using the For loop.
- Inside the For loop, Iterate till the given number of columns using another Nested For loop(Inner For loop).
- Check if the condition firstmatrix[n][m] is not equal to the secondmatrix[n][m] using the if conditional statement where n is the iterator value of the parent For loop and mÂ is the iterator value of the inner For loop.
- If the statement is true, then make the value of
**tempo**as 1. - Break the statement and exit the loop.
- Check if the value of tempo is equal to 1 using the if conditional statement.
- If the statement is true, then print “The given first and second matrixes are not equal.”
- Else print “The given first and second matrixes are equal.”
- The Exit of the Program.

**Below is the implementation:**

# Give the number of rows of the matrix as user input using the int(input()) function # and store it in a variable. mtrxrows = int(input('Enter some random number of rows of the matrix = ')) # Give the number of columns of the matrix as user input using the int(input()) function # and store it in another variable. mtrxcols = int(input('Enter some random number of columns of the matrix = ')) # Take a list and initialize it with an empty value using [] or list() to say gvnmatrix. fst_mtrx = [] print("Enter elements of the first matrix :") # Loop till the given number of rows using the For loop for n in range(mtrxrows): # Inside the For loop, Give all the row elements of the given Matrix as a list using # the list(),map(),int(),split() functions and store it in a variable. l = list(map(int, input( 'Enter {'+str(mtrxcols)+'} elements of row {'+str(n+1)+'} separated by spaces = ').split())) # Add the above row elements list to gvnmatrix using the append() function. fst_mtrx.append(l) scnd_mtrx = [] print("Enter elements of the second matrix :") # Loop till the given number of rows using the For loop for n in range(mtrxrows): # Inside the For loop, Give all the row elements of the given Matrix as a list using # the list(),map(),int(),split() functions and store it in a variable. l = list(map(int, input( 'Enter {'+str(mtrxcols)+'} elements of row {'+str(n+1)+'} separated by spaces = ').split())) # Add the above row elements list to gvnmatrix using the append() function. scnd_mtrx.append(l) # Take a variable say tempo and initialize its value to zero. tempo = 0 # Loop till the given number of rows using the For loop. for n in range(mtrxrows): # Inside the For loop, Iterate till the given number of columns using another # Nested For loop(Inner For loop). for m in range(mtrxcols): # Check if the condition firstmatrix[n][m] is not equal to the secondmatrix[n][m] using # the if conditional statement where n is the iterator value of the parent For loop # and mÂ is the iterator value of the inner For loop. if fst_mtrx[n][m] != scnd_mtrx[n][m]: # If the statement is true, then make the value of tempo as 1. tempo = 1 # Break the statement and exit the loop. break # Check if the value of tempo is equal to 1 using the if conditional statement. break if tempo == 1: # If the statement is true, then print "The given first and second matrixes are not equal." print("The given first and second matrixes are not equal.") else: # Else print "The given first and second matrixes are equal." print("The given first and second matrixes are equal.")

**Output:**

Enter some random number of rows of the matrix = 2 Enter some random number of columns of the matrix = 2 Enter elements of the first matrix : Enter {2} elements of row {1} separated by spaces = 3 5 Enter {2} elements of row {2} separated by spaces = 4 6 Enter elements of the second matrix : Enter {2} elements of row {1} separated by spaces = 1 2 Enter {2} elements of row {2} separated by spaces = 4 6 The given first and second matrixes are not equal.

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