# Python | Decimal is_qnan() method

Decimal#is_qnan() : is_qnan() is a Decimal class method which checks whether the Decimal value is quite NaN value.

Syntax: Decimal.is_qnan()

Parameter: Decimal values

Return: true – if the Decimal value is quite NaN value; otherwise false

Code #1 : Example for is_qnan() method

 # Python Program explaining  # is_qnan() method    # loading decimal library from decimal import *       # Initializing a decimal value a = Decimal(-1)    b = Decimal('nan')    # printing Decimal values print ("Decimal value a : ", a) print ("Decimal value b : ", b)       # Using Decimal.is_qnan() method print ("\n\nDecimal a with is_qnan() method : ", a.is_qnan())    print ("Decimal b with is_qnan() method : ", b.is_qnan())

Output :

Decimal value a :  -1
Decimal value b :  NaN

Decimal a with is_qnan() method :  False
Decimal b with is_qnan() method :  True

Code #2 : Example for is_qnan() method

 # Python Program explaining  # is_qnan() method    # loading decimal library from decimal import *       # Initializing a decimal value a = Decimal('-3.14')    b = Decimal('321e+5')    # printing Decimal values print ("Decimal value a : ", a) print ("Decimal value b : ", b)       # Using Decimal.is_qnan() method print ("\n\nDecimal a with is_qnan() method : ", a.is_qnan())    print ("Decimal b with is_qnan() method : ", b.is_qnan())

Output :

Decimal value a :  -3.14
Decimal value b :  3.21E+7

Decimal a with is_qnan() method :  False
Decimal b with is_qnan() method :  False

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