Working with Lists¶
In earlier chapters we worked with lists of numbers as shown below.
But a list in Python can also hold different types of things in the same list, like numbers and strings. You start and end a list with square brackets (
) and separate elements with commas as shown in line 1 below.
len will return the number of items in the list. You can do “arithmetic” with lists using
+, just like you can with strings. Multiplication repeats items in the list. We can add two lists together, even if one of the lists only has a single item in it.
Remember that a list starts with a
[ and ends with a
]. Items in the list are separated by commas.
Run the code below to see what type of error you get if you forget the ending
] as shown below on line 1. Also see what happens if you don’t separate the list items with commas as shown on line 2. Fix the code to run and print.