Itertools in Python 3, By Example

Supplemental materials for the Itertools in Python 3, By Example article on Real Python.

This folder contains content for two examples from the article: Analyzing the S&P500 and Building Relay Teams from Swimmer Data.

Downloading the Files

With `git`

If you have git installed, the easiest way to access these files is to clone the repository to the directory of your choice:

$ git clone https://github.com/realpython/materials.git

Then cd into the itertools-in-python3 directory:

$ cd materials/itertools-in-python3

Without `git`

Alternatively, you can download the entire repository as a .zip file from the repository's homepage using the green "Clone or download" button in the top right hand corner.

Running the Code Examples

To run the code examples, first make sure you have Python 3 installed on your machine. The code examples WILL NOT work with Python 2. If you need help installing Python 3, check out Real Python's Python 3 Installation & Setup Guide.

To run the sp500.py file, type python3 sp500.py into your terminal. Here's how that looks, with output:

$ python3 sp500.py
Max gain: 11.58% on 2008-10-13
Max loss: -20.47% on 1987-10-19
Longest growth streak: 14 days (1971-03-26 to 1971-04-15)

Note: Depending on your installation, you may need to type python3.6 or python36 to run the examples. If you follow the Python 3 Installation & Setup Guide, you should have no problem.

Similarly, for swimmers.py:

$ python3 swimmers.py
Backstroke A: Sophia, Grace, Penelope, Addison
Backstroke B: Elizabeth, Audrey, Emily, Aria
Breaststroke A: Samantha, Avery, Layla, Zoe
Breaststroke B: Lillian, Aria, Ava, Alexa
Butterfly A: Audrey, Leah, Layla, Samantha
Butterfly B: Alexa, Zoey, Emma, Madison
Freestyle A: Aubrey, Emma, Olivia, Evelyn
Freestyle B: Elizabeth, Zoe, Addison, Madison