# Python | Decimal copy_negate() method

• Last Updated : 05 Sep, 2019

Decimal#copy_negate() : copy_negate() is a Decimal class method which returns the negation of Decimal value.

Syntax: Decimal.copy_negate()

Parameter: Decimal values

Return: the negation of Decimal value

Code #1 : Example for copy_negate() method

 `# Python Program explaining ``# copy_negate() 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_negate() method``print` `(``"\n\nDecimal a with copy_negate() method : "``, a.copy_negate())`` ` `print` `(``"Decimal b with copy_negate() method : "``, b.copy_negate())`

Output :

```Decimal value a :  -1
Decimal value b :  0.142857

Decimal a with copy_negate() method :  1
Decimal b with copy_negate() method :  -0.142857

```

Code #2 : Example for copy_negate() method

 `# Python Program explaining ``# copy_negate() 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_negate() method``print` `(``"\n\nDecimal a with copy_negate() method : "``, a.copy_negate())`` ` `print` `(``"Decimal b with copy_negate() method : "``, b.copy_negate())`

Output :

```Decimal value a :  -3.14
Decimal value b :  3.21E+7

Decimal a with copy_negate() method :  3.14
Decimal b with copy_negate() method :  -3.21E+7
```

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