Module 15 of 15 · Step 1 of 10

Final Beginner Challenge

These projects combine the whole beginner path. Read each task, write a small plan, build one part at a time, and run often. There is no single required style: the checks focus on results and named behaviors.

By the end of this lesson, you can:

Plan a small complete program
Combine collections, loops, decisions, and functions
Check boundaries and output order
Explain why the result is correct

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Learn · Plan before coding

Concept 1 of 5

Plan before coding

For a multi-step task, list the input, each result you must calculate, and the output order. Solve and run one small part before adding the next. A function can keep a rule separate from a loop.

Pattern

# 1. inspect input
# 2. compute each result
# 3. print in the requested order

Code

values = [-2, 0, 3]
for number in values:
    if number > 0:
        print("Positive")

Output

Positive

Why it works

The list is known input.
The loop visits each value.
The condition chooses which result to show.

Common mistake

Not this

# print a result before calculating it

Try this

# calculate, then print

A clear order makes errors easier to locate.