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Week 2 Checkpoint: Lists, Loops, and Dictionaries — Python For Freelancers

Week 2 Checkpoint: Lists, Loops, and Dictionaries — Python For Freelancers | zuzu.codes

Day 15 · ~11 min●

Five functions, all working on the same client list. filter_active_clients, compute_totals_per_client, find_first_over_budget, group_by_status, status_summary. Which one felt like the biggest leap from Week 1?

status_summary — loops inside loops. I had to slow down and trace the data shape before I could write it.

That is the right instinct. Nested structures reward you for drawing the shape on paper first. Which Day 1 concept from last week kept showing up this week?

is_over_hours logic — the > comparison I wrote on Day 6 reappeared everywhere: filter, while loop, status grouping. It was already doing work without me realising.

Functions that compose without planning. That is the real payoff. Let's check what stuck.

Six questions. Ready.

All from this week's code. Two from Week 1 to keep the earlier patterns warm.

Quiz

0/6

6 questions80% to passretry anytime

1.What does filter_active_clients([{'name': 'Acme', 'hours': 4.5}, {'name': 'Ghost', 'hours': 0.0}], 2.0) return?

def filter_active_clients(clients, min_hours):
    return [c for c in clients if c.get('hours', 0) > min_hours]

[{'name': 'Acme', 'hours': 4.5}][{'name': 'Ghost', 'hours': 0.0}][{'name': 'Acme', 'hours': 4.5}, {'name': 'Ghost', 'hours': 0.0}][]

2.What does compute_totals_per_client([{'name': 'Acme', 'rate': 100.0, 'hours': 3.0}]) return?

[{'name': 'Acme', 'total': 300.0}][{'name': 'Acme', 'rate': 100.0, 'hours': 3.0, 'total': 300.0}]{'Acme': 300.0}300.0

3.The while loop in find_first_over_budget increments i at the end of each iteration and uses break on a match. What does the function return if no client exceeds the budget?

def find_first_over_budget(clients, budget):
    i = 0
    while i < len(clients):
        if clients[i]['rate'] * clients[i]['hours'] > budget:
            return clients[i]
        i += 1
    return {}

NoneThe last client dict in the list{} (empty dict)False

4.What does group_by_status([{'name': 'A', 'status': 'on track'}, {'name': 'B', 'status': 'on track'}]) return?

{'on track': [{'name': 'A', 'status': 'on track'}, {'name': 'B', 'status': 'on track'}]}{'A': 'on track', 'B': 'on track'}[{'name': 'A'}, {'name': 'B'}]{'on track': 2}

5.[REVIEW] What does format_invoice_line('Acme', 120.0) return, from Week 1?

def format_invoice_line(name, rate):
    return f"{name} — ${rate:.2f}/hr"

"Acme — $120.00/hr""Acme — $120/hr""Acme — ${rate:.2f}/hr""Acme — $120.0/hr"

6.[REVIEW] What does is_over_hours(5.0, 5.0) return, from Week 1?

TrueFalse0None