Python|十进制 is_nan() 方法
Decimal#is_nan() : is_nan()是一个 Decimal 类方法,用于检查 Decimal 值是否为 NaN 值。
Syntax: Decimal.is_nan()
Parameter: Decimal values
Return: true – if the Decimal value is NaN value; otherwise false
代码 #1:is_nan() 方法的示例
# 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() 方法的示例
# 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