## Getting absoulte values in Python with `abs()`

Python has a built in function called `abs()` that is used to find the absolute value from an interget or float value.

Absolute values are values that return a magnitue of a given number. If I put it in more simple tems, magnitue of a number tells us how far they are from zero in the number line.

For negative numbers `-` sign is not considered.

#### Example

``````>>> x, y = -10.11, -10
>>> abs(x)
>>>10.11
>>>abs(y)
>>>10
``````

Like most of python builtins it also has a dunder method `__abs__`

``````>>> y = -10
>>> y.__abs__()
>>> 10
``````

#### Real World Example

Suppose you are given a chart of temprature that has temprature values and you need to find the value that is closest to 0.

``````class TempratureReader:

def closest_to_zero(self, readings: List[float]) -> float:

return result
``````
``````>>> t = TempratureReader()
>>> t.closest_to_zero([10.11,-35.11,22.11, -2.1, -1.1, 1.1])
>>> 1.1
``````

#### absoulte values of other types

• For complex number, `abs()` returns the maginitudu.
``````>>> num = complex(3, 10)
>>> num
>>> (3+10j)
>>> abs(num)
>>> 10.44030650891055
``````
• For `Decimal` values it just works like `float` just returns the postive value.

References