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Python: from first line to project · Lesson 08 / 12
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Every mission has its data

A duration alone does not tell us whether a mission is finished. Let us collect title, minutes and status in a record with clear names.

Learning paths10 min

Let's discover together

  1. 1

    A dictionary maps keys to values: {"title": "Tico", "minutes": 10, "done": False}. The keys explain each value’s role.

  2. 2

    task["minutes"] looks up a key, not a position. task["done"] = True updates a field. Looking up a missing key with brackets raises KeyError.

  3. 3

    We can store several dictionaries in a list. In the loop, if not task["done"] selects unfinished missions. False is a boolean; "False" would be a nonempty string.

  4. 4

    Tico and Luma are fictional mission names. Keep fields consistent and do not use real names, passwords or contacts for practice.

✦
YOUR MISSION

Represent a mission with a dictionary and traverse a list of records.

Now it's your turn

Discovery workshop

Read, predict, check

Compare the two versions. Show result reveals a prepared output: this panel does not run Python. Then practise with the activity file.
Mini experiment

Learning simulation: compare cards and check your predictions. The browser is not compiling Rust or starting a server.

tasks = [{"title": "Tico", "minutes": 10, "done": False},
         {"title": "Luma", "minutes": 20, "done": True}]
total = 0
for task in tasks:
    if not task["done"]:
        total += task["minutes"]
print(total)
Build your answers and check when you are ready.
A moment to understand

Why should done be False without quotes in this model?

I need a hint

Type and content must match the rule.

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Take it with you

Add a fictional 5-minute mission. Test done as True and False and explain the difference. Editing its status does not mean performing the real mission.

PYTHON · .py

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