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Week 1 Checkpoint: Strings, Formatting, and Decisions — Python For Professionals

Week 1 Checkpoint: Strings, Formatting, and Decisions — Python For Professionals | zuzu.codes

Day 8 · ~11 min●

Five days, five functions. format_campaign, clean_campaign_name, format_kpi_line, is_over_budget, categorize_performance. Which one surprised you?

Honestly, format_kpi_line with the thousands separator. I had no idea {:,.2f} was even a thing — I've been doing that manually in Excel my whole career.

And now you never will again. That single format spec replaces a custom number-format dialog every time. What about the branching on Day 7?

The three-tier if/elif/else felt clean. Once I saw that "underperforming" only fires when both earlier conditions miss, it clicked. It's the same logic as a nested IF in a pivot.

A nested IF that doesn't make your eyes bleed. High bar, cleared.

Week 1 is behind me. Ready to check what actually stuck.

Six questions, all drawn from this week's code. These five functions are your Python toolkit now — let's make sure they're solid.

Quiz

0/6

6 questions80% to passretry anytime

1.What does format_campaign('Email Blast', 1250.0) return?

def format_campaign(name, spend):
    return f"{name}: ${spend:.2f}"

"Email Blast: $1250.00""Email Blast: $1250.0""Email Blast: $1,250.00""Email Blast: ${spend:.2f}"

2.What does clean_campaign_name(' Paid Search_Q1 ') return?

def clean_campaign_name(raw):
    return raw.strip().lower().replace('_', ' ')

"paid search q1""paid search_q1"" paid search q1 ""paid-search-q1"

3.What does format_kpi_line('Paid Search', 24500.0, 47.8) return?

def format_kpi_line(channel, spend, cpl):
    return f"{channel} — ${spend:,.2f} spend, ${cpl:.2f} CPL"

"Paid Search — $24500.00 spend, $47.80 CPL""Paid Search — $24,500.00 spend, $47.80 CPL""Paid Search — $24,500 spend, $47.80 CPL""Paid Search — $24,500.00 spend, $47.8 CPL"

4.What does is_over_budget(8500.0, 8500.0) return?

def is_over_budget(spend, budget):
    return spend > budget

TrueFalse0None

5.What does categorize_performance(95.0, 80.0) return?

def categorize_performance(cpl, target_cpl):
    if cpl <= target_cpl * 0.9:
        return "strong"
    elif cpl <= target_cpl:
        return "on track"
    else:
        return "underperforming"

"strong""on track""underperforming"False

6.Which f-string correctly formats 3200 as "$3,200.00"?

f"${3200:.2f}"f"${3200:,.2f}"f"${3200:,}"f"${3200:.2f,}"