`abs()` Function in Python [ English ]

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1. Introduction

The abs() function in Python is a built-in function used to return the absolute value of a number. The absolute value of a number is its distance from zero on the number line, without considering the sign.

In other words, abs() converts negative numbers into positive numbers, while positive numbers remain unchanged.

This function works with integers, floating-point numbers, and complex numbers.

2. Syntax

abs(number)

Parameter

• number A numeric value such as an integer, float, or complex number whose absolute value is required.

3. Return Value

• Returns the absolute (positive) value of the given number.

4. Example with Positive Number

print(abs(10))

Output

10

Explanation

• The number is already positive, so the function returns the same value.

5. Example with Negative Number

print(abs(-15))

Output

15

Explanation

• The negative number -15 is converted into its positive value 15.

6. Example with Floating-Point Number

print(abs(-7.5))

Output

7.5

Explanation

• The absolute value of -7.5 is 7.5.

7. Example with Complex Number

print(abs(3 + 4j))

Output

5.0

Explanation

• For complex numbers, abs() returns the magnitude of the number.
• It is calculated using the formula:

[ |a + bj| = \sqrt{a^2 + b^2} ]

For example:

[ \sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5 ]

8. Practical Example

temperature = -12

print("Temperature difference:", abs(temperature))

Output

Temperature difference: 12

Explanation

• The abs() function gives the distance from zero, ignoring the negative sign.

9. Summary

• abs() is a built-in Python function used to find the absolute value of a number.
• It removes the negative sign from numbers.
• It works with integers, floating-point numbers, and complex numbers.
• For complex numbers, it returns the magnitude of the number.