math.inf (infinity) constant is a floating point value that represents the mathematical concept of infinity

#import the math library
import math

#print the value of infinity
print(math.inf)

#print negative infinity
print(-math.inf)
math.inf

The value returned is equivalent to float('inf')

import math

print(type(math.inf))

print(math.inf == float("inf"))
print(-math.inf == float("-inf"))