> For the complete documentation index, see [llms.txt](https://www.pythonclassroom.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pythonclassroom.com/lists.md).

# Lists

## Presentation

{% embed url="<https://docs.google.com/presentation/d/1Yi1-kP2mP4IrK0KBb0miyZtmfR_-cM0qRFv3FD5upBk/edit?usp=sharing>" %}

## Video Lecture

{% embed url="<https://youtu.be/oCj2tz9YJMQ>" %}

## List Functions and Operators

|                                      |                                                                                                                          |
| ------------------------------------ | ------------------------------------------------------------------------------------------------------------------------ |
| list\_name = \[]                     | Creates an empty list                                                                                                    |
| list\_name = \[1,2,3,4,5]            | A list with elements 1,2,3,4,5                                                                                           |
| list\_name\[0]                       | Access the first element of the list                                                                                     |
| list\_name\[x-1]                     | Access the *x* element of the list                                                                                       |
| len(list\_name)                      | Returns the number of elements in list.  Useful when using a for loop and the range function.                            |
| sum(list\_name)                      | Computes the sum of the values in list.                                                                                  |
| min(list\_name)                      | Returns the minimum value in list.                                                                                       |
| max(list\_name)                      | Returns the maximum value in list.                                                                                       |
| list\_name.pop()                     | Removes the last element from list.                                                                                      |
| list\_name.pop(position)             | Removes element from the list from the given position.  All elements following are moved up one place.                   |
| list\_name.insert(position, element) | Inserts the element at the given position in the list.  All elements at and following the given position are moved down. |
| list\_name.append(element)           | Appends the element to the end of the list.                                                                              |
| list\_name.index(element)            | Returns the position of a given element in the list.  The element must be in the list.                                   |
| list\_name.remove(element)           | Removes the given element from the list and moves all elements following it up one position.                             |
| list\_name.del(position)             | Removes the element from the list by the given position.                                                                 |
| list\_name.sort()                    | Sorts the elements in the list from smallest to largest.                                                                 |
| item in list\_name                   | Returns true if item is found in the list or false otherwise.                                                            |

### Loop through a list

```python
friends = ["Sam", "Taylor", "Sandy"]
# Pythonic Way
for f in friends:
    print(f)

# C Style
for i in range(len(friends)):
    print(friends[i])
```

####


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