# Finding Magnitude of a Complex Number in Python

Hello! In this article, We use Python to get the Magnitude of a Complex Number using a simple snippet.

First, let us learn the basics of complex numbers in Python.

## Complex Numbers in Python

Let us first see how to Initialize or declare a complex number in Python.

We can create a complex number by initializing a variable to **p + qj**. Here p and q belong to the set of real numbers.

Example :

cn = 1 + 3j

In the above example, the real part(**p**) is **1** and imaginary part(**q**) is 3.

We can also create a complex number using the **complex([real][,imaginary])** method. It takes the real part and imaginary part as its parameters respectively.

If a parameter is omitted, then the respective part of the complex number is set to the default value. The default value is 0.

Example :

cn = complex(1,3)

In this program, we are going to make use of** abs()** function to get the magnitude of a complex number. The method abs() takes only one argument.

The argument can be :

1. Floating point Number

2. Complex Number

3. Integer

The **abs(number) **returns :

1. Modulus of the number if it is an Integer or Floating point.

2. Magnitude if the number is Complex.

## Program

Let us first declare complex number * cn* using any of the methods that we have discussed earlier.

cn = complex(3, 4)

Let us now find and also print the magnitude of the above complex number using **abs()** method.

print(abs(cn))

Output :

5.0

Yahoo! We have learned to find the magnitude of a complex number using a single line of code.

Thank you for reading the article. I hope this article helped you in some way. Also do check out our other related articles below :

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