Python | Decimal quantize() method

Decimal#quantize() : quantize() is a Decimal class method which returns a value equal to first decimal value (rounded) having the exponent of second decimal value.

Syntax: Decimal.quantize()

Parameter: Decimal values

Return: a value equal to first decimal value (rounded) having the exponent of second decimal value.

Code #1 : Example for quantize() method

# 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))

Output :

Decimal value a :  -1
Decimal value b :  0.142857


Decimal a with quantize() method :  -1.000000
Decimal b with quantize() method :  0.142857

Code #2 : Example for quantize() method

# 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))

Output :

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