Python Decimal is_signed()用法及代码示例

Decimal＃is_signed()：is_signed()是一种Decimal类方法，用于检查Decimal值的符号是否为负

用法：Decimal.is_signed()

参数：十进制值

返回：true –如果十进制值的符号为负；否则为假

代码1：is_signed()方法示例

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

输出：

Decimal value a :  -1
Decimal value b :  -Infinity


Decimal a with is_signed() method :  True
Decimal b with is_signed() method :  True

代码2：is_signed()方法的示例

# Python Program explaining  
# is_signed() 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_signed() method 
print ("\n\nDecimal a with is_signed() method : ", a.is_signed()) 
  
print ("Decimal b with is_signed() method : ", b.is_signed())

输出：

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


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

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