# Python Modules and Packages

Modules and packages are the core mechanisms for organizing code in Python. They allow you to break down large programs into small, manageable, and reusable files.

## Modules

A module is simply a file containing Python definitions and statements. The file name is the module name with the suffix `.py` appended.

### Creating a Module

Save this code in a file named `mymodule.py`:

```python
def greeting(name):
  print("Hello, " + name)

person1 = {
  "name": "John",
  "age": 36,
  "country": "Norway"
}
```

### Using a Module

```python
import mymodule

mymodule.greeting("Jonathan")
```

## Packages

A package is a way of organizing related modules into a directory hierarchy.

To create a package, you create a directory with the package name and a file named `__init__.py` inside it. The `__init__.py` file can be empty.

```
my_package/
  __init__.py
  module1.py
  module2.py
```