Quozl

Pippy Design Idea 2011-03-10

Usage

A learner will:

• review and run included examples,
• modify included examples, and run them,
• derive more complex code using included examples,
• derive more complex code using modules created by teachers or other learner, with or without changing the contributed module,
• write fresh modules.

Purpose

• increase code sharing,
• increase relevance to Python users,
• increase portability of code written, beyond Pippy and Sugar,

Data

A running Pippy instance will contain the following data:

• zero or more python zip bundles,
• each python zip bundle will include a setup.py capable of creating the zip bundle output,
• unless the user has asked to edited the setup.py, it will not be shown, instead a default will be used, maintained by Pippy,

Input

Pippy may read from:

• a saved instance of Pippy, in the journal,
• a zip bundle in the journal,
• example zip bundles included with Pippy,

Output

Pippy may write to:

• a saved instance of Pippy, in the journal,
• a zip bundle in the journal.

Display

Display will contain:

• toolbar,
• a series of tabs, one for each bundle, an add bundle button, and an open example bundle button,
• within each bundle, a series of tabs, one for __doc__ that is not editable, one for each source file that is editable, and an add file button,
• within each file, a syntax highlighting text edit widget.

(the series of tabs encapsulated in another series of tabs is potentially difficult for a learner to comprehend, but an alternative tree view is thought inappropriate because of the horizontal space consumed, and because use of a bundle should be constrained to the public API of the bundle).

Process

When run is pressed, display will contain:

• toolbar,
• stdout stdin vte,
• a stop button.

Changes

Partial list of changes to bring Pippy existing source to a state consistent with the design above:

• remove the examples widget from the main screen, provide it only as an "open an example bundle" function,
• remove the output window from the main screen, provide it only when a program is run, and only if the program generates stdout or reads from stdin,
• enlarge the program text entry widget to be nearly full screen,
• encapsulate the program text entry widget in tabs for files in a zip bundle,
• encapsulate the bundle in tabs for zip bundles loaded into pippy instance,
• on standard sugar save, save all zip bundles and files in a sugar journal entry,
• provide an export zip bundle button that creates a sugar journal entry of type zip bundle, for sharing,
• provide a way to import zip bundles from journal into the current pippy instance, using the object chooser,
• on execution of a bundle, allow access to all other currently loaded bundles via import, and access to system bundles via import,