First Day at Bean There: Your First Python Script

Commas in print are quick, but you can't control the spaces or the decimals. An f-string gives you both. Put an f right before the opening quote, then put any variable inside curly braces:

print(f"Today's special: {special}")

Python swaps {special} for its value. Inside the braces you can also say how a number should look. :.2f means "two digits after the point":

print(f"£{price:.2f}")      # £3.40

Sam also added a variable for how many cups of the special are left: cups_left = 24.

In board.py, delete Step 2's two prints and write two f-string prints that show:

Today's special: Pumpkin spice latte, £3.40
Cups left today: 24

Press Run, then Check. As before, the check runs your board again with another drink, price and number of cups.

# The specials board. Sam changes these values every morning; your prints use them.
special = "Pumpkin spice latte"
price = 3.40
cups_left = 24

# Step 2's board works, but the price shows as 3.4.
print("Today's special:", special)
print("Price:", price)

# TODO (Step 3): replace the two prints above with two f-string prints that show:
#   Today's special: Pumpkin spice latte, £3.40
#   Cups left today: 24

Customers type their own names on the order screen, and they type them however they like: " sAM rivera ". The cup label printer needs them tidy.

Strings come with methods, small built-in tools you call with a dot:

Methods don't change the original string: they give you a new one. Keep it in a variable, and chain methods one after another:

name = raw_name.strip().upper()

len(name) counts the characters in a string, spaces included.

In label.py, tidy raw_name into a new variable, then print:

SAM RIVERA | Flat White | LARGE
Letters and spaces: 10

The name in capitals, the drink in title case, the size in capitals. You can call a method right inside an f-string's braces: {drink.title()}. Press Run, then Check: the check tries another messy name too.

# Names arrive the way customers type them on the order screen. The cup label needs them tidy.
raw_name = "  sAM rivera "
drink = "flat white"
size = "large"

# TODO (Step 4): print two lines:
#   SAM RIVERA | Flat White | LARGE
#   Letters and spaces: 10
# Tidy raw_name first and keep it in a new variable, then use it in both lines.

At 11:00 Sam asks how the morning went. The till counted the cups sold each hour; your script turns them into a report.

Python does arithmetic with the symbols you know, and you can keep each result in a variable:

total = cups_7am + cups_8am + cups_9am + cups_10am

In report.py, work out the total, the average per hour (four hours) and the takings (cups times the price of a cup), then print exactly:

Morning report
Cups sold: 122
Average per hour: 30.5
Takings: £390.40

Press Run before you format the takings, and look at the number: 122 * 3.20 comes out as 390.40000000000003. Computers store most decimals as a very close binary fraction, and the tiny difference shows up. :.2f hides it on screen. Tills avoid it altogether by counting money in whole pennies: you'll do that in the next quest.

Press Check when the report matches. The check also runs it with another morning's numbers.

What you did in this lab: ran Python in a terminal, printed text, kept values in variables, formatted them with f-strings, tidied strings with methods and did arithmetic. That's Level 1's toolkit, and the boss at the end of the level asks for all of it at once.

# The till counted the cups sold each hour this morning. Sam wants the numbers at 11:00.
cups_7am = 18
cups_8am = 42
cups_9am = 35
cups_10am = 27
price_per_cup = 3.20

# TODO (Step 5): work out the total, the average per hour and the takings, then print exactly:
#   Morning report
#   Cups sold: 122
#   Average per hour: 30.5
#   Takings: £390.40