# Overview

In Python, **`exec()`** is a built-in function used to run a dynamically generated program, which can be either a string or an object code.


## Syntax
```
exec(object, globals, locals)
```

## Parameters

- `object`: This represents a string or code object.

- `globals`: This represents the global functions. It can be a dictionary. This parameter is optional.

- `locals`: This represents a local functions. It can be a mapping object. This parameter is optional.


## Return value

This function returns no value. 

## Example











# create variable
num = 20
# compute in real-time and display result
exec('print("The value for num:", num **2)')


## Explanation

- Line 2: We create a variable, `num`, and assign value to it.

- Line 4: We execute a string code using the `exec()` function.

What is the exec() function in Python?

Used to execute dynamically generated code, Python's exec() runs strings or code objects and accepts optional globals and locals parameters.