isfinite()

isfinite(number) returns Boolean , True if the input number is finite, returns False otherwise.
isfinite(n)  

Example
import math
print(math.isfinite(2))     # True
print(math.isfinite(-2))    # True
print(math.isfinite(0.0))   # True 
print(math.isfinite(0/1))   # True 
print(math.isfinite(0.0/1)) # True  
Note : 0.0 is considered finite.
import math
print(math.isfinite(float('inf')))   # False
print(math.isfinite(float('-inf')))  # False
print(math.isfinite(float('nan')))   # False 


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