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NumPy: Create a 3x3 identity matrix, i.e. diagonal elements are 1,the rest are 0

NumPy: Basic Exercise-27 with Solution

Write a NumPy program to create a 3x3 identity matrix, i.e. diagonal elements are 1,the rest are 0.

Sample Solution :

Python Code :

import numpy as np
x = np.eye(3)
print(x)

Sample Output:

[[ 1.  0.  0.]
 [ 0.  1.  0.]
 [ 0.  0.  1.]]                         

Pictorial Presentation:

NumPy: Create a 3x3 identity matrix, i.e. diagonal elements are 1,the rest are 0.

Python Code Editor:


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Next: Write a NumPy program to create a 10x10 matrix, in which the elements on the borders will be equal to 1, and inside 0.

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Python: Tips of the Day

Checks if the given number falls within the given range.

Example:

def tips_range(n, start, end = 0):
  return start <= n <= end if end >= start else end <= n <= start
print(tips_range(2, 4, 6))
print(tips_range(4, 8))
print(tips_range(1, 3, 5))
print(tips_range(1, 3))

Output:

False
True
False
True