> ## Documentation Index
> Fetch the complete documentation index at: https://python-training.ipoint-labs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Lab 19: Unique visitors with sets

> Hands-on lab · 15 min · Module 7

Turn a website's visit log into a set to count the unique visitors, add and discard names, and check who visited with `in`.

[Open Lab 19 in the IP Lab Portal](https://labs.intellectualpoint.com/labs/pcep-lab-19-unique-visitors)

## What you will practice

* Build a set from a list
* Add and discard items
* Test membership with `in`

## Before you start

Time
15 minutes
*Hands-on in Python 3*

Where
IP Lab Portal
*labs.intellectualpoint.com*

Module
Module 7: Tuples and sets
*PCEP-30-03*

* In the IP Lab Portal, open **Lab 19 - Unique visitors with sets**.
* In class, this lab comes right after the **Lesson 4 recap** slide in [Module 7 core material](https://python-training.ipoint-labs.com/pcep/module-07/material.md).


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