# Lists

> Source: https://learn-python.com/lists/
> Part of Learn Python, free to read.

Lists are very similar to arrays. They can contain any type of variable, and they can contain as many variables as you wish. Lists can also be iterated over in a very simple manner. Here is an example of how to build a list.

```python
mylist = []
mylist.append(1)
mylist.append(2)
mylist.append(3)
print(mylist[0]) # prints 1
print(mylist[1]) # prints 2
print(mylist[2]) # prints 3

# prints out 1,2,3
for x in mylist:
    print(x)
```

Accessing an index which does not exist generates an exception (an error).

```python
mylist = [1,2,3]
print(mylist[10])
```