Eclipse Download and Installation
(for Python) Instructions

Install Python before installing Eclipse.

You may want to print these instructions before proceeding, so that you can refer to them while downloading and installing Eclipse. Or, just keep this document in your browser. You should read each step completely before performing the action that it describes. This document shows downloading and installing Eclipse (Luna). You should download and install the latest version of Eclipse. The current latest (as of Summer 2017) is Eclipse (Oxygen).

Eclipse: Version 4.4 (Luna)

The Eclipse download requires about 200 MB of disk space; keep it on your machine, in case you need to re-install Eclipse. When installed, Eclipse requires an additional 200 MB of disk space.


  1. Click Eclipse

    The following page will appear in your browser. In this handout we will download Eclipse Standard 4.4 for Mac OS. The version you should download is Eclipse IDE for Eclipse Committers.

    It is critical that Java, Python, and Eclipse are either all 32 Bit or are all 64 Bit (and only if your Machine/OS supports 64 Bit): I think it easiest on Macs to use 64 Bit for everything.

  2. Click the 64-bit after Mac Cocoa for your machine, to the right of Eclipse Standard 4.4 (right under Eclipse Luna R Packages).

    You will see the following page (don't worry about the name of the institution to the right of the big downward pointing arrow).

  3. Click the big downward pointing arrow underneath the Download eclipse-standard-luna-R-macosx-cocoa-x86_64.tar.gz from: The site named here, in purple to the right of the arrow: [United States] ibiblio (http) is the random one chosen by the download page this time; yours may differ.

    If you see the following pop-up window

    ensure the Save File radio button is depressed and click OK.

    This file should start downloading in your standard download folder. This file is about 200 Mb so it might take a while to download fully if you are on a slow internet connection (it took me a few minutes over a cable modem). Don't worry about the exact time as long as the download continues to make steady progress.

    After the download has finished, terminate the window browsing the Eclipse download.

  4. Move this file to a more permanent location, so that you can install Eclipse (and reinstall it later, if necessary).

  5. Start the Installing instructions directly below.

Installing (for Python)

Python and Java should be installed before installing Eclipse

  1. Unzip eclipse-standard-luna-R-macosx-cocoa-x86_64.tar.gz by double-clicking it.

    Unzipping this file creates a folder named eclipse; unzipping 200 MB can take a few minutes. You can leave this folder here or move it elsewhere on your hard disk.

  2. Create an alias on the desktop to to the eclipse file in this eclipse folder:
    On the Mac, you can

    Now you are ready to perform a one-time only setup of Eclipse on your machine.

  3. Double-click the alias to Eclipse that you just created above.

    If the following pop-up window appears

    click Open.

    The following splash screen will appear

    and then a Workspace Launcher pop-up window will appear.

    In the Workspace text box, your name should appear between /Users and /Documents, instead of ellenolshansky (I did this on my wife's Mac).

    Leave unchecked the Use this as the default and do not ask again box. Although you will use this same workspace for the entire quarter (checking projects in and out of it), it is best to see this Workspace Launcher pop-up window each time you start Eclipse, to remind you where your workspace is located.

    In fact, it is a good idea to create on your desktop an alias to your workspace folder; but you must click OK (see below) before Eclipse creates this folder and you can alias it.

  4. Click OK.

    Progress bars will appear as Eclipse loads.

    Eventually the Eclipse workbench will appear with a Welcome tab covering it.

  5. Terminate (click X on) the Welcome tab.

    You will not see the Welcome tab when you start Eclipse again, after this first time.

  6. Click Help (on the far right of the top toolbar) and then click Install New Software... in its pull-down menu, as shown below.

    The Install pop-up window will appear.

  7. Enter the text (or cut/paste from this document) into the Work with text box and press Enter (if that doesn't work, try

    In a few seconds the information under Name should change from
    There is no site selected to Pending to

    Select only the top PyDev checkbox; do NOT select the PyDev Mylyn Integration (optional) box.
    Check before proceeding that the Install pop-up window appears as

  8. Click Next >

    A new Install pop-up window will appear.

  9. Click Next >

    A new Install pop-up window will appear.

    Selecet the I accept the terms of the license agreement radio button, so the window appears as

  10. Click Finish

    An Installing Software pop-up window will appear. During installation, it will show the various operations it is performing and a progress bar for each one. Because the installer is fetching various files online, this process might take a few minutes.

    The installation will pause, and a Selection Needed pop-up window appears.

  11. Check the box labeled Brainwy Software; Pydev; Brainwy.

    Check before proceeding that the Install pop-up window appears as

  12. Click OK

    The installation will finish (showing the final progress bars).

    A Software Updates pop-up window will appear.

  13. Click Yes

    Eclipse will terminate and restart. As you did in step 3, click OK to the Workspace Launcher pop-up window.

  14. Click Eclipse (to the right of Apple logo on the far left of the top tool bar), and then click Preferences in its pull-down menu, as shown below.

  15. Drill down to select the interpreter: The Preferences pop-up window should appear as follows

  16. Click New... at the top-right of the top window

    A Select Interpreter pop-up window appears.

    Type python34 in the Interpreter Name text box.
    Type (or cut/paste) //usr/local/bin/python3 in the Interpreter Executable text box (or browse to this file).
    The Select Interpreter pop-up window should appear as

  17. Click OK.

    A Selection needed pop-up window will appear.

    Ensure that a check appears in all four checkboxes.

  18. Click OK.

    The Preferences pop-up window will be changed to

  19. Click OK.

    A Progress Information pop-up window will appear.

    During installation, it will show the various operations it is performing and a progress bar for each one. Eventually the installation will terminate.

  20. Click Window (to the left of Help on the far right of the top tool bar), hover over Open Perspective in the pull-down menu and then click Other... in the next pull-down menu.

    The Open Perspective pop-up window will appear.

  21. Double-click PyDev (third from the bottom)

    The label on Eclipse will change from Java - Eclipse to PyDev - Eclipse, and the Package Explorer in the upper-left tab will change to PyDev Package Explorer, and a PyDev icon will appear to the right of the Java icon.

  22. Right-click the Java icon to the left of the PyDev icon and select close

    The Eclipse workbench will now have only the PyDev icon here and will look like

  23. Download the file.

    In the pop-window that appears

    ensure the Save File radio button is depressed and click OK.

  24. Locate the workspace folder created in step 3 (see /Users/yourname/Documents/workspace) and copy the file into this workspace and unzip it there, producing the courselib folder; it should should contain a bunch of Python module files (ending in .py). From time to time you will be asked to put other course-specific Python module files into this courselib folder; these modules will be usable in all Python projects in Eclipse.

  25. Inform Eclipse to use the courselib folder in all Python projects.

  26. Terminate (click X on) the Eclipse window.
Eclipse is now installed for Python.