Python | Decimal is_nan()方法

原文:https://www.geeksforgeeks.org/python-decimal-is_nan-method/

Decimal # is _ nan():is _ NaN()是 Decimal 类方法,检查 Decimal 值是否为 NaN 值。

语法: Decimal.is_nan()

参数:十进制值

返回:true–如果十进制值为 NaN 值;否则为假

代码# 1:is _ nan()方法示例

# Python Program explaining 
# is_nan() 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_nan() method
print ("\n\nDecimal a with is_nan() method : ", a.is_nan())

print ("Decimal b with is_nan() method : ", b.is_nan())

输出:

Decimal value a :  -1
Decimal value b :  NaN

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

代码# 2:is _ nan()方法示例

# Python Program explaining 
# is_nan() 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_nan() method
print ("\n\nDecimal a with is_nan() method : ", a.is_nan())

print ("Decimal b with is_nan() method : ", b.is_nan())

输出:

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

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