Decimal#copy_sign():copy_sign()是一個Decimal類方法,它返回第一個Decimal值的副本,其符號設置為與第二個Decimal值的符號相同。
用法: Decimal.copy_sign() 參數: Decimal values 返回: the copy of the first Decimal value with the sign set to be the same as the sign of the second Decimal value.
代碼#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))
輸出:
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
代碼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))
輸出:
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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