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# 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

```

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