How To Use abs() Function In Python With Examples

In Python, the `abs()` function is used to return the absolute value of a given number. The absolute value of a number is its distance from zero, regardless of whether it is positive or negative. In this article, I will tell you how to use the python abs() function with examples.

1. Python abs Function Definition.

1. The `abs()` function in Python is a built-in function that returns the absolute value of a given number.
2. The syntax for the `abs()` function is as follows:

   abs(num)

3. The parameter `num` is the number whose absolute value is to be returned.
4. If the given number is a complex number, the `abs()` function returns its magnitude.

2. Python abs Function Examples.

1. Here are some common examples of using the `abs()` function in Python.

   Example 1:
   ```python
   num = -10
   abs_num = abs(num)
   print("Absolute value of", num, "is", abs_num)
   ```
   Output:
   ```
   Absolute value of -10 is 10
   ```
   In this example, we assign the value `-10` to the variable `num`. We then use the `abs()` function to get the absolute value of `num`, which is `10`.
   
   Example 2:
   ```python
   a = -5
   b = 10
   c = -15
   abs_sum = abs(a) + abs(b) + abs(c)
   print("Absolute sum of", a, "+", b, "+", c, "is", abs_sum)
   ```
   Output:
   ```
   Absolute sum of -5 + 10 + -15 is 30
   ```
   In this example, we have three variables `a`, `b`, and `c` with different values. We use the `abs()` function to get the absolute value of each variable and then add them together to get the absolute sum.
   
   Example 3:
   ```python
   num_list = [-2, 4, -6, 8, -10]
   abs_list = [abs(num) for num in num_list]
   print("Absolute values of", num_list, "are", abs_list)
   ```
   Output:
   ```
   Absolute values of [-2, 4, -6, 8, -10] are [2, 4, 6, 8, 10]
   ```
   In this example, we have a list of numbers `num_list`. We use a list comprehension to apply the `abs()` function to each number in the list and create a new list `abs_list` with the absolute values of the original numbers.

2. Below is a complex number example using the python abs function.

   >>> num = 3 + 4j
   >>>
   >>> abs_num = abs(num)
   >>>
   >>> print("Absolute value of", num, "is", abs_num)
   Absolute value of (3+4j) is 5.0 
   
   # this is because √(3²+4²) = 5