# How to Import the Streamlit Module into Your Streamlit Application
When building a Streamlit app, the first step is to import the Streamlit module into your `app.py` **f**ile. The `app.py` file contains the Python code that defines your Streamlit application.
To import Streamlit, add the following statement at the beginning of your `app.py` file:
```python
import streamlit as st
```
This statement imports the `streamlit` module and assigns it the alias `st`, allowing you to access Streamlit's functionality using a shorter name.
*An* ***alias*** *is an alternative name used to refer to a module in your code. In Python, the* `as` *keyword allows you to assign an alias to an imported module.*
*For example, instead of writing streamlit every time you use its functionality, you can simply use* `st`.
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This mini-guide was originally published on [**PDF Python Hub**](https://payhip.com/PDFPythonHub), where you can find more in-depth Python resources for working with PDFs.
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### **Want to learn how to create an** `app.py` **file?**
Check out this mini-guide: [Build and Deploy a “Hello World” Web App with Streamlit Community Cloud + GitHub](https://payhip.com/PDFPythonHub/blog/news/build-and-deploy-a-hello-world-web-app-with-streamlit-community-cloud-github).
---
This mini-guide was originally published on [**PDF Python Hub**](https://payhip.com/PDFPythonHub), where you can find more in-depth Python resources for working with PDFs.