Python math.isinf() Method

1. Syntax
2. Parameters
3. Returns
4. Example Code: Use of the math.isinf() Method

Python math.isinf() method is an efficient way of finding whether a number is infinite or not. It returns True if the number is infinite (it can be positive or negative infinity); otherwise, False.

Syntax

math.isinf(x)

Parameters

Returns

The return type for this method is a Boolean value. True is returned if x is an infinite value; otherwise, False.

Example Code: Use of the math.isinf() Method

Example Code:

import math

x = 100
value= math.isinf(x)
print(f"Is {x} an infinite number? {value}")

x = 0
value= math.isinf(x)
print(f"Is {x} an infinite number? {value}")

x = math.inf
value= math.isinf(x)
print(f"Is {x} an infinite number? {value}")

x = -math.inf
value= math.isinf(x)
print(f"Is {x} an infinite number? {value}")

value= math.isinf((float("nan")))
print(f"Is NaN an infinite number? {value}")

Output:

Is 100 an infinite number? False
Is 0 an infinite number? False
Is inf an infinite number? True
Is -inf an infinite number? True
Is NaN an infinite number? False

Note that the above code shows how we can use this method.