[concept]Python Basics
Variables & F-Strings
# theory
Variables hold values. Python figures out the type:
name = "Alice"
age = 25
price = 19.99
is_active = TrueF-strings embed expressions inside strings. Prefix with f, put expressions in {}:
print(f"hi {name}, you are {age} years old")
print(f"total: ${price * 3:.2f}") # math works inside braces:.2f is a format spec. A few you'll reach for constantly:
:.2ftwo decimals (3.14159becomes3.14):,thousands separator (1000000becomes1,000,000):.0%percent (0.85becomes85%):>10right-align inside 10 chars
# examples [3]
# example 01 · basic variables
Creating different types of variables and printing them
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# example 02 · calculations in f-strings
You can do math right inside the curly braces
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# example 03 · string methods with variables
Variables can be modified with string methods
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# challenges [2]
# challenge 01/02todo
Create a variable called 'product' with value 'Laptop' and 'price' with value 999.99. Print them in an f-string like: 'The Laptop costs $999.99'
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# challenge 02/02todo
Create variables for hours=40 and rate=25.50. Calculate and print the weekly pay formatted as currency with 2 decimal places.
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# project
# project-challenge
thread: SF Permits Analysis · reward: 50 xp
# brief
You're building a permit lookup system. Given a permit number and its details, create a formatted summary line that displays the key information clearly.
# task
Format Permit Summary
# your code
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