🔧 Python notes

List = []

squares = [x**2 for x in range(5)]

squares = [x**2 for x in range(5)]
An ordered, mutable collection of elements.

Methods

append(x) → Add at the end.

insert(i, x) → Add at index i.

extend(iterable) → Concatenate another list.

pop([i]) → Remove and return element at i (default last).

remove(x) → Remove first occurrence of x.

clear() → Remove all elements.

Check Existence: x in my_list

Sort: my_list.sort() or sorted(my_list)

Reverse: my_list.reverse()

Count: my_list.count(x)

Index of Element: my_list.index(x)

Copy: my_list.copy()

len(my_list) → Length of list.

max(my_list), min(my_list) → Largest/smallest element.

sum(my_list) → Sum of elements (for numeric lists).

squares = [x**2 for x in range(5)]

List comprehension squares = [x**2 for x in range(5)]

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