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Python Exercises

Python NumPy: Create an array of (3, 4) shape, multiply every element value by 3 and display the new array

Python NumPy: Array Object Exercise-73 with Solution

Write a Python program to create an array of (3, 4) shape, multiply every element value by 3 and display the new array.

Sample Solution:-

Python Code:

import numpy as np
x= np.arange(12).reshape(3, 4)
print("Original array elements:")
print(x)
for a in np.nditer(x, op_flags=['readwrite']):
    a[...] = 3 * a
print("New array elements:")
print(x)

Sample Output:

Original array elements:                                               
[[ 0  1  2  3]                                                         
 [ 4  5  6  7]                                                         
 [ 8  9 10 11]]                                                        
New array elements:                                                    
[[ 0  3  6  9]                                                         
 [12 15 18 21]                                                         
 [24 27 30 33]]  

Python Code Editor:

import numpy as np
x= np.arange(12).reshape(3, 4)
print("Original array elements:")
print(x)
for a in np.nditer(x, op_flags=['readwrite']):
    a[...] = 3 * a
print("New array elements:")
print(x)

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