Decimal#quantize():quantize()是一種Decimal類方法,它返回一個值,該值等於具有第二個十進製值的指數的第一個十進製值(四舍五入)。
用法: Decimal.quantize()
參數:十進製值
返回:等於第一個十進製值(四舍五入)且具有第二個十進製值的指數的值。
代碼1:quantize()方法示例
# Python Program explaining
# quantize() 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.quantize() method
print ("\n\nDecimal a with quantize() method : ", a.quantize(b))
print ("Decimal b with quantize() method : ", b.quantize(b))
輸出:
Decimal value a : -1 Decimal value b : 0.142857 Decimal a with quantize() method : -1.000000 Decimal b with quantize() method : 0.142857
代碼2:quantize()方法的示例
# Python Program explaining
# quantize() 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.quantize() method
print ("\n\nDecimal a with quantize() method : ", a.quantize(b))
print ("Decimal b with quantize() method : ", b.quantize(b))
輸出:
Decimal value a : -3.14 Decimal value b : 3.21E+7 Decimal a with quantize() method : -0E+5 Decimal b with quantize() method : 3.21E+7
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