{"id":4741,"date":"2022-09-13T02:55:42","date_gmt":"2022-09-13T02:55:42","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=4741"},"modified":"2022-09-13T02:56:50","modified_gmt":"2022-09-13T02:56:50","slug":"python-abs","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-built-in-functions\/python-abs\/","title":{"rendered":"Python abs"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Python abs()<\/code> function to return an absolute value of a variable.<\/p>\n\n\n\n

Introduction to the Python abs() function #<\/a><\/h2>\n\n\n\n

The abs()<\/code> function returns an absolute value of a number<\/a>. Here’s the syntax of the abs()<\/code> function:<\/p>\n\n\n

abs(x)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Also, x<\/code> can be an object that implements the __abs__()<\/code> method. In this case, the abs()<\/code> function will delegate to the __abs__()<\/code> method.<\/p>\n\n\n\n
Python abs() function example #<\/a><\/h2>\n\n\n\n
Let’s take some examples of using the abs()<\/code> function.<\/p>\n\n\n\n
1) Using abs() function with numbers #<\/a><\/h3>\n\n\n\n
The following example uses the abs()<\/code> function with numbers:<\/p>\n\n\n
balance = -10<\/span>\nprint(abs(balance))  # ? 10<\/span>\n\nowed_amount = -20.99<\/span>\nprint(abs(owed_amount))  # ? 20.99<\/span>\n\nc = 3<\/span> - 5j<\/span>\nprint(abs(c))  # ? 5.0<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
2) Using abs() function with a user-defined object #<\/a><\/h3>\n\n\n\n
The following example creates a class Balance<\/code> that implements the __abs__()<\/code> method:<\/p>\n\n\n
class<\/span> Balance<\/span>:<\/span>\n    def<\/span> __init__<\/span>(self, amount)<\/span>:<\/span>\n        self.amount = amount\n\n    def<\/span> __abs__<\/span>(self)<\/span>:<\/span>\n        return<\/span> abs(self.amount)\n\n\nbalance = Balance(-299<\/span>)\nprint(abs(balance))  # ? -299<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
When we pass the balance<\/code> object to the abs()<\/code> function, the abs()<\/code> function delegates the call to the __abs__()<\/code> method that returns the absolute value of the amount<\/code> attribute.<\/p>\n\n\n\n
Summary #<\/a><\/h2>\n\n\n\n
  • Use the Python abs()<\/code> function to return the absolute value of a number or an object that implements the __abs__()<\/code> method.<\/li><\/ul>\n
    \n\t
    \n\t\t
    Was this tutorial helpful ?<\/div>\n\t\t
    \n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t
    \n\t\t
    \n\t\t\t
    <\/div>\n\t\t\t
In this syntax, x<\/code> can be an integer, a floating point number<\/a>, or a complex number. If x<\/code> is a complex number, the abs()<\/code> returns the magnitude of that complex number.<\/p>\n\n\n\n