US Army ERDC

June 17-21, 2019

8:00 am - 4:00 pm

Instructors: Drew Allan Loney, Chris Kees

General Information

Software Carpentry aims to help researchers get their work done in less time and with less pain by teaching them basic research computing skills. This hands-on workshop will cover basic concepts and tools, including program design, version control, data management, and task automation. Participants will be encouraged to help one another and to apply what they have learned to their own research problems.

For more information on what we teach and why, please see our paper "Best Practices for Scientific Computing".

Who: The course is aimed at summer students, researchers, and staff at the U.S. Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC). All ERDC staff are welcome to participate. If you are external to the USACE ERDC and would like to participate, please contact the organizer as this may be possible in some circumstances. You don't need to have any previous knowledge of the tools that will be presented at the workshop. However, please come with your laptop computer, either ACE-IT or RDE, setup and configured with the necessary software. This is helpful to ensure the progress of the class. If you have issues installing the necessary software, please come early to the Monday morning class.

Where: 3909 Halls Ferry Road, Vicksburg, Mississipii. Get directions with OpenStreetMap or Google Maps. ERDC CHL Curtis Conference Facility.

When: June 17-21, 2019. Add to your Google Calendar.

Requirements: Participants must bring a laptop with a Mac, Linux, or Windows operating system (not a tablet, Chromebook, etc.) that they have installed Git, a Bash terminal emulator, and Python 3 version. Please have this done prior to the first day of class to ensure we are able to cover all of the course content.

Code of Conduct: Everyone who participates in Carpentries activities is required to conform to the Code of Conduct. This document also outlines how to report an incident if needed.

Accessibility: We are committed to making this workshop accessible to everybody. The workshop organizers have checked that:

Materials will be provided in advance of the workshop and large-print handouts are available if needed by notifying the organizers in advance. If we can help making learning easier for you (e.g. sign-language interpreters, lactation facilities) please get in touch (using contact details below) and we will attempt to provide them.

Contact: Please email drew.a.loney@usace.army.mil for more information.


Surveys

Please be sure to complete these surveys before and after the workshop.

Pre-workshop Survey

Post-workshop Survey


Schedule

Monday

Before Pre-workshop survey
08:00 Installation help
09:00 Automating Tasks with the Unix Shell - Introduction/Files
10:30 Morning break
10:45 Automating Tasks with the Unix Shell - Pipes & Filters
12:00 Lunch break
13:00 Automating Tasks with the Unix Shell - Loops & Scripts
14:30 Afternoon break
14:45 Automating Tasks with the Unix Shell - Finding Things
15:30 Wrap-up
15:45 END

Tuesday

08:00 Installation help
09:00 Version Control with Git - Setup & Create Repositories
10:30 Morning break
10:45 Version Control with Git - Collaborating & Conflicts
12:00 Lunch break
13:00 Programming with Python - Working the Data
14:30 Afternoon break
14:45 Programming with Python - Loops & Lists
15:45 Wrap-up
16:00 END
15:45

Wednesday

08:00 Installation help
09:00 Programming with Python - Choices & Functions
10:30 Morning break
10:45 Programming with Python - Errors, Exceptions, & Defensive Programming
12:00 Lunch break
13:00 Programming with Python - Debugging & Command Line Programs
14:30 Afternoon break
14:45 Advanced Programming with Python - Parallel Processing
15:45 Wrap-up
15:50 Post-workshop Survey
16:00 END

Thursday - Proteus Day 1

08:00 Installation help
10:30 Morning break
12:00 Lunch break
14:30 Afternoon break
15:45 Wrap-up
16:00 END

Friday - Proteus Day 2

08:00 Installation help
10:30 Morning break
12:00 Lunch break
14:30 Afternoon break
15:45 Wrap-up
16:00 END

Links to Lessons

Please use these links to follow along in the lessons.

The Unix Shell

Version Controll with Git

Programming with Python


Syllabus

The Unix Shell

  • Files and Directories
  • History and Tab Completion
  • Pipes and Redirection
  • Looping Over Files
  • Creating and Running Shell Scripts
  • Finding Things
  • Reference...

Programming in Python

  • Using Libraries
  • Working with Arrays
  • Reading and Plotting Data
  • Creating and Using Functions
  • Loops and Conditionals
  • Defensive Programming
  • Using Python from the Command Line
  • Parallel Processing
  • Reference...

Version Control with Git

  • Creating a Repository
  • Recording Changes to Files: add, commit, ...
  • Viewing Changes: status, diff, ...
  • Ignoring Files
  • Working on the Web: clone, pull, push, ...
  • Resolving Conflicts
  • Open Licenses
  • Where to Host Work, and Why
  • Reference...

Setup

To participate in a Software Carpentry workshop, you will need access to the software described below. In addition, you will need an up-to-date web browser.

We maintain a list of common issues that occur during installation as a reference for instructors that may be useful on the Configuration Problems and Solutions wiki page.

The Bash Shell

Bash is a commonly-used shell that gives you the power to do simple tasks more quickly.

RDE Setup Instructions

Video Tutorial
  1. Download the Git for Windows installer.
  2. Run the installer and follow the steps below:
    1. Click on "Next" four times (two times if you've previously installed Git). You don't need to change anything in the Information, location, components, and start menu screens.
    2. Select "Use the nano editor by default" and click on "Next".
    3. Keep "Use Git from the Windows Command Prompt" selected and click on "Next". If you forgot to do this programs that you need for the workshop will not work properly. If this happens rerun the installer and select the appropriate option.
    4. Click on "Next".
    5. Keep "Checkout Windows-style, commit Unix-style line endings" selected and click on "Next".
    6. Select "Use Windows' default console window" and click on "Next".
    7. Click on "Install".
    8. Click on "Finish".
  3. If your "HOME" environment variable is not set (or you don't know what this is):
    1. Open command prompt (Open Start Menu then type cmd and press [Enter])
    2. Type the following line into the command prompt window exactly as shown:

      setx HOME "%USERPROFILE%"

    3. Press [Enter], you should see SUCCESS: Specified value was saved.
    4. Quit command prompt by typing exit then pressing [Enter]

This will provide you with both Git and Bash in the Git Bash program.

ACE-IT Setup Instructions

    This process will involve using the ACE-IT SoftwareTrak system to install new software onto your machine. Please give sufficient time in advance of the workshop for the installation process.

  1. Through SoftwareTrack, request the installation of Git. This should be self-service and should install immediately.

The default shell in all versions of macOS is Bash, so no need to install anything. You access Bash from the Terminal (found in /Applications/Utilities). See the Git installation video tutorial for an example on how to open the Terminal. You may want to keep Terminal in your dock for this workshop.

The default shell is usually Bash, but if your machine is set up differently you can run it by opening a terminal and typing bash. There is no need to install anything.

Git

Git is a version control system that lets you track who made changes to what when and has options for easily updating a shared or public version of your code on github.com. You will need a supported web browser.

You will need an account at github.com for parts of the Git lesson. Basic GitHub accounts are free. We encourage you to create a GitHub account if you don't have one already. Please consider what personal information you'd like to reveal. For example, you may want to review these instructions for keeping your email address private provided at GitHub.

Git should be installed on your computer as part of your Bash install (described above).

Video Tutorial

For OS X 10.9 and higher, install Git for Mac by downloading and running the most recent "mavericks" installer from this list. Because this installer is not signed by the developer, you may have to right click (control click) on the .pkg file, click Open, and click Open on the pop up window. After installing Git, there will not be anything in your /Applications folder, as Git is a command line program. For older versions of OS X (10.5-10.8) use the most recent available installer labelled "snow-leopard" available here.

If Git is not already available on your machine you can try to install it via your distro's package manager. For Debian/Ubuntu run sudo apt-get install git and for Fedora run sudo dnf install git.

Text Editor

When you're writing code, it's nice to have a text editor that is optimized for writing code, with features like automatic color-coding of key words. The default text editor on macOS and Linux is usually set to Vim, which is not famous for being intuitive. If you accidentally find yourself stuck in it, hit the Esc key, followed by :+Q+! (colon, lower-case 'q', exclamation mark), then hitting Return to return to the shell.

nano is a basic editor and the default that instructors use in the workshop. It is installed along with Git.

Others editors that you can use are Notepad++ or Sublime Text. Be aware that you must add its installation directory to your system path. Please ask your instructor to help you do this.

nano is a basic editor and the default that instructors use in the workshop. See the Git installation video tutorial for an example on how to open nano. It should be pre-installed.

Others editors that you can use are BBEdit or Sublime Text.

nano is a basic editor and the default that instructors use in the workshop. It should be pre-installed.

Others editors that you can use are Gedit, Kate or Sublime Text.

Python

Python is a popular language for research computing, and great for general-purpose programming as well. Installing all of its research packages individually can be a bit difficult, so we recommend Anaconda, an all-in-one installer.

Regardless of how you choose to install it, please make sure you install Python version 3.x (e.g., 3.6 is fine).

We will teach Python using the Jupyter notebook, a programming environment that runs in a web browser. For this to work you will need a reasonably up-to-date browser. The current versions of the Chrome, Safari and Firefox browsers are all supported (some older browsers, including Internet Explorer version 9 and below, are not).

RDE Setup Instructions

Video Tutorial
  1. Open https://www.anaconda.com/download/#windows with your web browser.
  2. Download the Python 3 installer for Windows.
  3. Install Python 3 using all of the defaults for installation except make sure to check Add Anaconda to my PATH environment variable.

ACE-IT Setup Instructions

This process will involve using the ACE-IT SoftwareTrak system to install new software onto your machine. Please give sufficient time in advance of the workshop for the installation process.

  1. Go to the ACEIT website: https://aceit.usace.army.mil/Pages/default.aspx
  2. Hover over the “Self Help” option until a menu appears
  3. Scroll down to “Software Search (Approval Status, etc.)” and click it
  4. From here, an app portal will open up
  5. Once the app portal is open, go to the top of page and within the “Search Catalog” search for “Python”
  6. Several options for Python will appear; scroll down until you find “Python Software Foundation Python 3.6.4”
  7. Click “Add to Cart”
  8. Go to checkout making sure to choose the machine you want to use for the analysis
  9. Click “Next”
  10. The request for install has been submitted; someone from ACEIT will contact you to finish the installation process (usually takes 1-3 days)
  11. An ACEIT technician will install Python 3.6.4 on your local machine
  1. Open https://www.anaconda.com/download/#linux with your web browser.
  2. Download the Python 3 installer for Linux.
    (The installation requires using the shell. If you aren't comfortable doing the installation yourself stop here and request help at the workshop.)
  3. Open a terminal window.
  4. Type
    bash Anaconda3-
    and then press Tab. The name of the file you just downloaded should appear. If it does not, navigate to the folder where you downloaded the file, for example with:
    cd Downloads
    Then, try again.
  5. Press Return. You will follow the text-only prompts. To move through the text, press Spacebar. Type yes and press enter to approve the license. Press enter to approve the default location for the files. Type yes and press enter to prepend Anaconda to your PATH (this makes the Anaconda distribution the default Python).
  6. Close the terminal window.