Assigning a variable NaN in python without numpy

Question

Most languages have a NaN constant you can use to assign a variable the value NaN. Can python do this without using numpy?

Answer 1

You can assign a variable NaN in Python without NumPy with construct NaN numbers using Python's decimal module:

>>from decimal import Decimal 

>>b = Decimal('nan') 

>>print(b) 

NaN 

>>print(repr(b)) 

Decimal('NaN') 

>>>Decimal(float('nan')) 

Decimal('NaN') 

>>> import math 

>>> math.isnan(b) 

True

The math.isnan(...) will also work with Decimal objects.

To know more about this you can have a look at the following video tutorial:-