NumPy: Create a NumPy array of 10 integers from a generator

NumPy: Array Object Exercise-85 with Solution

Generate 10 Integers from Generator

Write a NumPy program to create a NumPy array of 10 integers from a generator.

Pictorial Presentation:

Sample Solution:

Python Code:

# Importing the NumPy library and aliasing it as 'np'
import numpy as np

# Creating a generator 'iterable' using a generator expression that yields values from 0 to 9
iterable = (x for x in range(10))

# Creating a NumPy array using np.fromiter() by converting the elements obtained from the iterable
# Specifying the data type as np.int to create an array of integers
print(np.fromiter(iterable, np.int)) 

Sample Output:

[0 1 2 3 4 5 6 7 8 9]

Explanation:

In the above code –

iterable = (x for x in range(10)): Define a generator expression iterable that generates numbers from 0 to 9 (10 is excluded). The generator expression is enclosed in parentheses and works by iterating through the range of numbers.

print(np.fromiter(iterable, np.int)): Call the np.fromiter() function to create a NumPy array from the iterable object. The second argument, np.int, specifies the desired data type for the elements in the resulting NumPy array. Finally, print the created NumPy array.

Python-Numpy Code Editor:

Previous: Write a NumPy program to suppresses the use of scientific notation for small numbers in NumPy array.
Next: Write a NumPy program to how to add an extra column to an NumPy array.