Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

NumPy: Test element-wise for complex number, real number of a given array. Also test whether a given number is a scalar type or not

NumPy: Basic Exercise-8 with Solution

Write a NumPy program to test element-wise for complex number, real number of a given array. Also test whether a given number is a scalar type or not.

Sample Solution :

Python Code :

import numpy as np
a = np.array([1+1j, 1+0j, 4.5, 3, 2, 2j])
print("Original array")
print(a)
print("Checking for complex number:")
print(np.iscomplex(a))
print("Checking for real number:")
print(np.isreal(a))
print("Checking for scalar type:")
print(np.isscalar(3.1))
print(np.isscalar([3.1]))

Sample Output:

Original array
[ 1.0+1.j  1.0+0.j  4.5+0.j  3.0+0.j  2.0+0.j  0.0+2.j]
Checking for complex number:
[ True False False False False  True]
Checking for real number:
[False  True  True  True  True False]
Checking for scalar type:
True
False                         

Pictorial Presentation:

NumPy: Test element-wise for complex number, real number of a given array. Also test whether a given number is a scalar type or not.
NumPy: Test element-wise for complex number, real number of a given array. Also test whether a given number is a scalar type or not.

Python-Numpy Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a NumPy program to test element-wise for NaN of a given array.
Next: Write a NumPy program to test if two arrays are element-wise equal within a tolerance.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m