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
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