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← Python Basics
○Welcome to Python○Demo: Print a Message○Exercise: Print an Announcement○Demo: Names and Values○Exercise: Label a Station○Demo: Inspect Data Types○Exercise: Record Supplies✦Module Quiz
○Demo: Calculate with Numbers○Exercise: Calculate a Bus Cost○Demo: Format a Message○Exercise: Format an Invoice○Demo: Convert Text to Numbers○Exercise: Convert Measurements○Demo: A Prefilled User Response○Exercise: Build a Workshop Ticket✦Module Quiz
○Compare and branch○Exercise: Choose a shelf sign○Repeat with while○Exercise: Charge a device○Count with for and range○Exercise: Mark bus stops○Skip with continue, stop with break○Exercise: Admit visitors○Project: Workshop sign-in✦Module Quiz
○Define and Call: Demo○Exercise: Define and Call○Parameters and Return: Demo○Exercise: Parameters and Return○Defaults and Keywords: Demo○Exercise: Defaults and Keywords○Local Scope: Demo○Exercise: Local Scope○Project: Workshop Receipts✦Module Quiz
○Index a Text Code○Exercise: Read Badge Edges○Slice a Route Label○Exercise: Slice Ticket Fields○Clean a Message with Methods○Exercise: Standardize a Notice○Format a Card with an f-String○Exercise: Make a Market Sign✦Module Quiz
○Create and Index a Supply List○Exercise: Build a Queue○Change a Playlist○Exercise: Update Orders○Loop and Slice a Route○Exercise: Pack Deliveries○Read a Fixed Tuple Record○Exercise: Read a Session Record✦Module Quiz
○Look Up and Update a Dictionary○Exercise: Update a Contact○Loop Through Dictionary Entries○Exercise: Write a Receipt○Keep Unique Visitors in a Set○Exercise: Compare Club Groups○Demo: Summarize Library Visits○Exercise: Build a Market Roster✦Module Quiz
○Tracebacks and a Safe Count Demo○Exercise: Recover Ticket Counts○Write and Read a Browser File Demo○Exercise: Save and Read a Message○Mini Project: Attendance Log✦Module Quiz
○Import Math: Demo○Exercise: Import Math○Local Module: Demo○Exercise: Local Module○Packages and Dotted Imports✦Module Quiz
○Recursion and a Base Case Demo○Exercise: Recursive Ticket Sum○Lambda, Map, and Filter Demo●Exercise: Clean Badge Names✦Module Quiz
○Classes, Objects, and Enums to Recognize○Final Project: Workshop Board✦Module Quiz

Exercise: Clean Badge Names

The demo changed prices; this job cleans attendee badge names. First transform each name to uppercase with map and a lambda. Then keep only names of length at least four with filter and another lambda. Convert each result to a list to display it. These are optional compact patterns, not requirements for the final workshop project.

Edit main.py, Run to inspect both lists, then Submit. The two tasks have separate checkpoints; badge_names is already supplied.

Your Task

  1. Set upper_names to list(map(...)) using a lambda that uppercases each name in badge_names.
  2. Set long_names to list(filter(...)) using a lambda that keeps names with at least four characters from upper_names.
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