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// Code Example
arithmetic.py
All basic arithmetic operators in one file. With variables, order of operations, and why division always returns a floa…
// Code Example
int_vs_float.py
Same value, different type. See how int and float behave differently — division, conversion, mixing, and the float prec…
// Code Example
math_module.py
sqrt, floor, ceil, pi, pow, round — the math module and built-ins in one file. Your first import, explained.
// Exercise
temperature_converter.py
Convert Celsius to Fahrenheit and back. Three parts — basic conversion, reverse, and an optional Kelvin challenge.
// Exercise
bmi_calculator.py
Calculate your BMI and find out what it means. Three parts — basic formula, category, and a full summary challenge.
// Other
number_mistakes.py
7 mistakes almost every beginner makes with numbers. Wrong assumption, what Python actually does, and the fix.
// Cheatsheet
Numbers — The Full Picture
Everything you've learned about numbers — in one place. Types, operators, int vs float, rounding, math module, and comm…
// Achievement
numbers_complete_medal.stl
You finished the Numbers chapter. Download, print, and keep it. You earned it.
// Code Example
bool_basics.py
True or False — that's it. See how bool works, how comparison operators return bools, and why == and = are not the same.
// Code Example
logical_operators.py
and, or, not — three operators, endless logic. Truth tables, real examples, and combining conditions.
// Code Example
in_operator.py
One word. One answer. See how in and not in work — with strings, case sensitivity, and real examples.
// Exercise
password_validator.py
Every requirement is a bool. Build a password validator — from basic rules to military-grade, and connect it to your us…
// Other
bool_mistakes.py
6 bool mistakes almost every beginner makes. Wrong assumption, what Python actually does, and the fix.
// Cheatsheet
Bools — The Full Picture
Everything you've learned about bool — in one place. Comparison operators, logical operators, in, combining conditions,…
// Achievement
bools_complete_medal.stl
You finished the Bools chapter. Download, print, and keep it. You earned it.