Python Decimal compare_signal()用法及代码示例

Decimal＃compare_signal()：compare_signal()是一个十进制类方法，用于比较除NaN值之外的两个十进制值。

用法：Decimal.compare_signal()

参数：十进制值

返回：
1 –如果a> b
-1 –如果
0 –如果a = b

代码1：compare_signal()方法示例

# Python Program explaining  
# compare_signal() method 
  
# loading decimal library 
from decimal import *
  
  
# Initializing a decimal value 
a = Decimal('0.142857') 
  
b = Decimal(-1) 
  
  
# printing Decimal values 
print ("Decimal value a : ", a) 
print ("Decimal value b : ", b) 
  
  
# Using Decimal.compare_signal() method 
print ("\n\nDecimal a with compare_signal() method : ", a.compare_signal(a)) 
  
print ("Decimal a with compare_signal() method : ", a.compare_signal(b)) 
  
print ("Decimal b with compare_signal() method : ", b.compare_signal(a))

输出：

Decimal value a :  0.142857
Decimal value b :  -1


Decimal a with compare_signal() method :  0
Decimal a with compare_signal() method :  1
Decimal b with compare_signal() method :  -1

代码2：compare_signal()方法的示例

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

输出：

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


Decimal a with compare_signal() method :  0
Decimal a with compare_signal() method :  -1
Decimal b with compare_signal() method :  1

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