🎯 What you will learn
- Use f-strings to build messages
- Use methods like upper(), lower() and replace()
- Slice and search strings
👋 Let’s get started!
Text is everywhere in apps: usernames, messages, passwords. Python gives strings amazing superpowers 🦸 — let’s unlock them.
🪜 Step by step
1. ✨ f-strings
Put f before the quotes and variables in { } — no more + juggling!
name = "Leo"
level = 4
print(f"{name} reached level {level}! 🎮")2. 🧰 Methods
Methods are functions that belong to a value. Use a dot!
word = "Python"
print(word.upper())
print(word.lower())
print(word.replace("P", "J"))3. ✂️ Slicing & searching
Grab parts with [start:end] and search with in.
msg = "Hello world"
print(msg[0:5])
print("world" in msg)🧪 Try it!
Change the code and press ▶ Run to see what happens. You can’t break anything!
Username maker
first = "maya"
animal = "otter"
number = 42
username = f"{first.capitalize()}{animal.capitalize()}{number}"
print("Your username:", username)
print("Length:", len(username))Shout a greeting
name = input("Name? ")
loud = name.upper()
print(f"HELLO {loud}!!!")📖 Key words
Tap a card to flip it over!
- f-string
- A string with {variables} inside ✨
- Method
- A function attached with a dot 🔧
- Slice
- Part of a string [start:end] ✂️
🏆 Challenge
Use an f-string to print: Kim has 3 badges
Challenge
player = "Kim"
badges = 3
Knowledge Check Quiz
- What prints?
- What prints?
- What prints?