Python | Decimal copy_sign()方法
原文:https://www . geesforgeks . org/python-decimal-copy _ sign-method/
Decimal # copy _ sign():copy _ sign()是一个 Decimal 类方法，返回第一个 Decimal 值的副本，符号设置为与第二个 Decimal 值的符号相同。
Syntax:
Decimal.copy_sign()
Parameter:
Decimal values
Return:
the copy of the first Decimal value with the sign set
to be the same as the sign of the second Decimal value.
代码# 1:copy _ sign()方法示例
# Python Program explaining
# copy_sign() method
# loading decimal library
from decimal import *
# Initializing a decimal value
a = Decimal(-1)
b = Decimal('0.142857')
# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)
# Using Decimal.copy_sign() method
print ("\n\nDecimal a with copy_sign() method : ", a.copy_sign(a))
print ("Decimal a with copy_sign() method : ", a.copy_sign(b))
print ("Decimal b with copy_sign() method : ", b.copy_sign(a))
输出:
Decimal value a : -1
Decimal value b : 0.142857
Decimal a with copy_sign() method : -1
Decimal a with copy_sign() method : 1
Decimal b with copy_sign() method : -0.142857
代码# 2:copy _ sign()方法示例
# Python Program explaining
# copy_sign() 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.copy_sign() method
print ("\n\nDecimal a with copy_sign() method : ", a.copy_sign(a))
print ("Decimal a with copy_sign() method : ", a.copy_sign(b))
print ("Decimal b with copy_sign() method : ", b.copy_sign(a))
输出:
Decimal value a : -3.14
Decimal value b : 3.21E+7
Decimal a with copy_sign() method : -3.14
Decimal a with copy_sign() method : 3.14
Decimal b with copy_sign() method : -3.21E+7
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