Description
Coding
Python: beginner to advanced
Learn Python through 40 progressive lessons from first steps to reusable programs, structured data, robust error handling, and efficient algorithms. Each lesson includes examples, practice questions, and a runnable coding task.
Build reliable foundations with values, decisions, collections, loops, and functions.
- 1
Your first message
Read a simple program and work out what it displays.
6 min
- 2
Names and values
Store a value in a variable and use it in a message.
8 min
- 3
Calculate a total
Use numbers and variables to solve a small everyday problem.
8 min
- 4
Building messages
Combine text and values in a readable message.
10 min
- 5
Working with text
Clean up text, change its case, and count characters.
10 min
- 6
Converting numbers
Convert numeric text before doing arithmetic.
10 min
- 7
Comparing values
Use comparisons to ask questions with true-or-false answers.
10 min
- 8
Making decisions
Choose between two actions with if and else.
10 min
- 9
More than two choices
Handle several cases with if, elif, and else.
10 min
- 10
Combining conditions
Use and, or, and not to combine simple checks.
10 min
- 11
Your first list
Keep several values in a list and access them by position.
10 min
- 12
Changing a list
Add, replace, and remove items in a list.
10 min
- 13
Looping through items
Use a for loop to process each list item.
10 min
- 14
Counting with range
Repeat an action using a sequence of integers.
10 min
- 15
Totals in a loop
Accumulate a running total while processing a list.
10 min
- 16
While loops
Repeat a block while a condition stays true.
10 min
- 17
Named data with dictionaries
Store related values under meaningful keys.
10 min
- 18
Reusable functions
Define a function and pass a value to it.
12 min
- 19
Returning values
Return a function result and use it in another calculation.
12 min
- 20
Project: a shopping receipt
Combine a function, a list, a loop, and a condition in one small program.
12 min