2.4 Lists

list elements:

a_list = ['a', 'b', 'mpilgrim', 'z', 'example']

a_list ← name

['a', 'b', 'mpilgrim', 'z', 'example'] ← items in list

[0, 1, 2, 3, 4] ← index

Slicing

a_list[1:3]

a_list[1:-1]

a_list[:3]

a_list[1:]

a_list[:]

Adding to list:

a_list = a_list + [2.0, 3]

append(True)

extend([‘this’, ‘that’)

insert(3, ‘goes_in_place_of_3’)

Adding to list - dif between extend and append:

>>> is_it_true(('a', 'b')) ②

yes, it's true

>>> a_list.extend('what')

>>> a_list

> ['a', 'd', 'play', 'sand', 'w', 'h', 'a', 't']

>>> a_list.append('what')

>>> a_list

> ['a', 'd', 'play', 'sand', 'w', 'h', 'a', 't', 'what']

>>> a_list.extend(['sam', 'I', 'am'])

>>> a_list

> ['a', 'd', 'play', 'sand', 'w', 'h', 'a', 't', 'what', 'sam', 'I', 'am']

>>> a_list.append(['sam', 'I', 'am'])

>>> a_list

> ['a', 'd', 'play', 'sand', 'w', 'h', 'a', 't', 'what', 'sam', 'I', 'am', ['sam', 'I', 'am']]

---

>>> a_list.extend('what')

>>> a_list

> ['a', 'd', 'play', 'sand', 'w', 'h', 'a', 't']

​​2.4 Lists