What You Get on Each Step

Different iterables hand you different things on each step. Knowing what arrives is the whole game:

List/array → each item

String → each character

Dictionary → each key (then you look up the value)

Set → each unique member

Range → each number in a sequence

Getting the keys and values

PYTHON

record = {"name": "Ruby", "city": "Jackson"}

print(list(record.keys()))
print(list(record.values()))

JAVASCRIPT

const record = { name: "Ruby", city: "Jackson" };

console.log(Object.keys(record));
console.log(Object.values(record));

Compare → Python asks the dictionary itself: record.keys(). JavaScript asks the built-in Object helper: Object.keys(record). Different grammar, identical result, a walkable sequence of the labels.

EXAMPLE

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YOUR TURN

Your turn → Make a dictionary describing yourself, with your name, your city and a favorite book, then print its keys and its values.

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Syntax has to be exact. Every quote, bracket and parenthesis needs its partner, and in Python the spaces at the start of a line count. One slip and the program won't run; the message will say where.

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