Lesson 12

Tuples

Tuples are used to make a tuple of items. There’s also something called a list and dictionary. The difference between a tuple and lists and dictionaries is that items in a tuple CANNOT be changed or added to (only tuples can be added to tuples, not strings to tuples). This is called Tuple Immutability. When merging two tuples together, we call that concatenation.

A tuple is assigned a name just like a variable. The objects it holds act more like strings than variables (they do not hold value).

Type in the following program. You don't have to put the comments in. They're just there to show you what each section of the program is teaching you. It's so big that you have to open a link to it:

From this program you should know the following:

1. How to create a tuple
2. How to print the items in a tuple
3. How to state the total number of items in a tuple
4. How to test if an item is in a tuple
5. How to call out a specific item location in a tuple (indexing)
6. How to output different item locations in a tuple
7. How to join two tuples (concatenate)

Assignment #12

Create a program that does the following:

1. asks you for 2 items to put in the 1st tuple
2. asks you for 2 items to put in the 2nd tuple
3. tells you what both tuples are
4. concatenates them into a new tuple and shows the new tuple
5. tells you what the first item in the new tuple is and the last one

The output should look as close as possible to the example below. (ignore that 4 in the second last line, it's an oopsie)