infinity.py

import math

x = math.inf
if math.isinf(x):
    print(f'math: ({x}) is infinity')
y = -math.inf
if math.isinf(y):
    print(f'math: ({y})is negative infinity')


print()

import numpy as np
x = np.inf
if np.isinf(x):
    print(f'np:({x}) is infinity')
y = -np.inf
if np.isinf(y):
    print(f'np: ({y}) is negative infinity')