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Using Python, Travis CI, and GitHub to Effectively Teach Programming Gregory M. Kapfhammer October 5 at PyGotham 2018 Hi! My name is GREGORY M. KAPFHAMMER @GregKapfhammer www.gregorykapfhammer.com Roadmap for this Talk Introduce

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Using Python, Travis CI, and GitHub to Effectively Teach Programming

Gregory M. Kapfhammer

October 5 at PyGotham 2018

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@GregKapfhammer www.gregorykapfhammer.com

Hi! My name is

GREGORY M. KAPFHAMMER

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Introduce strategies and tools for effectively teaching programming

Roadmap for this Talk

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USE INDUSTRY STANDARD SOFTWARE IN ALL COURSES

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SUITABLE FOR INSTRUCTORS IN INDUSTRY OR ACADEMIA

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GitHub Travis Python

Discuss in greater detail!

Exploring Technologies

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GitHub

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Travis

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Python

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Clear Status Key Ideas Fast Grading

Important Goals

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HELP STUDENTS AND TEACHERS EFFECTIVELY COLLABORATE

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Source Code Technical Writing Commit Counts Commit Messages Program Output Data Files

Deliverables to Check

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LEVERAGE EXISTING TOOLS WHENEVER POSSIBLE

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Source code linting Markdown linting Prose checking JUnit test suite Pytest test suite Automated build tools

Tools to Support Checks

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DEVELOP NEW SOLUTIONS IN PYTHON WHEN NECESSARY

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Tools Packages Testing

Benets of Python

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Black Flake8 Pipenv Pylint Pytest Pytest Plugins (e.g., Codecov)

Tools for Development

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DESIGN PRINCIPLES THAT GUIDED DEVELOPMENT

Inspired by John Ousterhout's A Philosophy of Software Design

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Working code is not sufcient: aim for simplicity
Code that hasn't been executed does not work
Simple interfaces over simple implementations
Great documentation encourages contributions

Design Principles

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Local Travis

See GatorGrader and GatorGradle in the GatorEducator organization on GitHub

Flexible Checking

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CREATE TWO REPOSITORIES FOR EACH ASSIGNMENT

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Solution Starter Check

Using Travis CI

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THE STARTER REPOSITORY SHOULD NOT PASS THE TESTS

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Python Gradle

Supporting different programming languages, the Gradle plugin runs GatorGrader checks in parallel

Efcient Project Grading

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Let's Congure Travis CI!

1. # use Java and non-root
2. dist: trusty
3. sudo: false
4. language: Java
5. jdk: oraclejdk8

7. # ignore the virtualenv that Travis creates
8. env:

9 global: Travis CI runs private builds for every student

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Let's Congure GatorGrader!

1. ---
2. name: cmpsc-100-fall-2018-lab3
3. break: true
4. indent: 4
5. ---
6. # --> check the source code for various

characteristics

7. # note that without an "--exact" the check is an

"at least" Configure GatorGrader for use through Gradle

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✘ Repository has at least 14 commit(s) ➔ Found 9 commit(s) in the Git repository ✘ The writing has at least 100 word(s) ➔ Found 12 word(s) in a paragraph ✘ The output has one of the '28.75' ➔ Found 0 fragment(s) in the output

Passed 6/13 (46%) of checks for f2018-lab3

GatorGrader's Output

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Computational Expression Data Abstraction Software Engineering Web Development Articial Intelligence

Courses and Topics

Different topics, goals, languages, and levels

Used during laboratory, practical, and class

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GatorGrader is like having a constant coach! I liked receiving feedback on the quality of my source code and writing before turning in the nal version of my lab.

ANNA YEAGER

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Deliverables Insights

Ideas for Experiments

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WHAT CODE AND CONCEPTS CAUSE STUDENT FRUSTRATION?

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New Checks Bug Reports

See GatorGrader and GatorGradle in the GatorEducator organization on GitHub

Let's Collaborate