---
description: >-
  This document will show how to import Python libraries and read data files
  with Visual Python.
---

# Data Preparation

{% embed url="https://www.youtube.com/watch?v=JrtkV_MpS0E" %}

### To import packages/libraries

Before starting, we need to import essential Python libraries.

1. Click on the <mark style="color:green;">**Import**</mark> app from the menu
2. Select libraries you need
3. Click <mark style="color:green;">**Run**</mark> button to generate code.

Numpy, Pandas, Matplotlib are the most primarily used libraries for data analysis. You can also add other libraries with <mark style="color:green;">**+ Module**</mark> / <mark style="color:green;">**+ Function**</mark> buttons.

### To read data from a file

Now, we need a dataset to analyze.

1. Click on the <mark style="color:green;">**File**</mark> app, to read data files.&#x20;
2. Identify the data type: CSV, Excel, JSON, Pickle are supported
3. Click on the folder icon to open the file explorer.
4. Use additional options if necessary.
5. Click <mark style="color:green;">**Run**</mark> !