Promenite listu
jasnim operacijama.

Lists can grow, shrink, and change as your program works with a group of values.

01 Uči02 Isprobaj03 Predvidi

01 Uči

Metode liste menjaju listu na korisne načine.

Use <code>append()</code> to add at the end and <code>insert()</code> to add at a chosen position.

tasks = ["Learn Python", "Practice loops"]
tasks.append("Build a project")
print(tasks)

append() adds one new item after the current final item.

['Learn Python', 'Practice loops', 'Build a project']

remove(value) removes a matching value. pop(index) removes an item at an index and returns it.

↳

Važna razlika: remove() looks for a value; pop() works with a position and gives the removed item back.

Uklonite i sačuvajte stavku

items = ["book", "pen", "bag"]
items.remove("pen")
removed = items.pop(1)
print(items)
print(removed)

After removing "pen", the list shifts left, so index 1 then refers to "bag".

Proverite listu

numbers = [5, 10, 15]
print(len(numbers))
print(10 in numbers)

len() counts items and in checks whether a value is present.

02 Isprobaj

Python radni prostor

Učitavanje Python okruženja…

Run each operation, then change an item or method and observe how the list changes.

IzlazČeka se Python

Okruženje pregledača se učitava. I dalje možeš da menjaš primer koda.

Pyodide pokreće Python u Web Worker-u pregledača. Zaustavlja se i ponovo pokreće ako se kod predugo izvršava. Izvršavanje u pregledaču nije potpuna bezbednosna granica; ne unosi tajne i ne oslanjaj se na njega za izolaciju nepouzdanog koda.

03 Predvidi

Šta će ovaj program ispisati?

Follow the list after append, then remove the item at index 1 with pop.

numbers = [5, 10, 15]

numbers.append(20)
numbers.pop(1)

print(numbers)

Tvoj mentor za učenje

Ask Sloby about list operations

Describe what feels unclear about adding, removing, or changing list items.

Zdravo! Ja sam Sloby. Hajde da prođemo kroz operacije nad Python listama.

04 Provera razumevanja

What will this program print, and why? Explain remove, pop, and the changed index.

items = ["book", "pen", "bag"]

items.append("laptop")
items.remove("pen")
removed = items.pop(1)

print(items)
print(removed)