Python IDE for J2ME

Python IDE (Py2ME) is a complete Python development environment for Java ME (J2ME) MIDP 2.0 devices. It supports both Python 2 and Python 3 syntax, includes a built-in interpreter simulator, file management via JSR-75, and a full-screen code editor.

• Python 3 Mode (modern syntax with print() parentheses)
• Python 2 Mode (legacy syntax with print statements)
• Switch between versions in Settings

• TextField editor with syntax helper (inline editing)
• Full Edit mode - full-screen TextBox for comfortable typing
• Live line counter - updates as you type
• Keyword/snippet insertion - 80+ Python keywords and snippets
• Support for 8000 characters per script

• Save scripts to device storage
• Open scripts from file browser
• Auto-detect .py files
• Storage info display (available space, root directory)
• Persistent storage via RMS (RecordStore)

• Splash screen with animated dash (Dash Animation V2)
• Developer name personalization (first-run setup)
• Graphics demo - low-level Canvas API demonstration
• About screen - platform and environment details
• Settings screen - Python version selector + developer name editor

• MIDP 2.0 / CLDC 1.1 compatible device or emulator
• JSR-75 (FileConnection API) for file operations (optional but recommended)
• Java ME SDK or J2ME emulator for development

1. Compile all .java files:

   javac -bootclasspath <path-to-midp-cldc-jars> *.java

2. Package into .jar:

   jar cvfm PythonIDE.jar MANIFEST.MF *.class

3. Create .jad descriptor file
4. Deploy to device or run in emulator

PythonIDE.java           # Main MIDlet, menu, settings, RMS storage
EditorScreen.java        # Code editor with Full Edit mode
PythonInterpreter.java   # Python script parser/executor
FileManager.java         # JSR-75 file I/O operations
SplashScreen.java        # Animated splash screen
GraphicsDemo.java        # Low-level graphics demonstration

1. Enter your developer name (personalizes the IDE title)
2. Main menu appears with demo scripts

1. Select a script from the main menu
2. Edit code in the Code: field
3. Press Insert to add Python keywords/snippets
4. Press Full Edit for full-screen editing mode
5. Press Run to execute

• Press Full Edit button in editor
• Enjoy full-screen TextBox for easier typing
• Press Done to save changes and return
• Line count auto-updates on return

• Save: Press Save → enter filename → confirm
• Open: Press Open from main menu → select .py file
• Files saved to device's file:///root1/ or similar (JSR-75 dependent)

• Python Version: Switch between Python 2 and Python 3
• Developer Name: Change your personalization
• Storage Info: View available space and root directory

• Simulated execution (not real Python runtime)
• Supports common keywords: print, if, for, while, def, import
• Built-in functions: len(), range(), int(), str(), abs(), max(), min()
• Variable storage and basic arithmetic
• File I/O bridge to JSR-75

file_write('name.py', content)   # Write file
file_read('name.py')             # Read file
file_list()                      # List all .py files
file_exists('name.py')           # Check if file exists
file_delete('name.py')           # Delete file
file_append('log.txt', line)     # Append to file
storage_info()                   # Show storage details

• RMS RecordStore for:
  • Developer name (PythonIDEPrefs)
  • Python version setting (PythonIDESettings)
• JSR-75 FileConnection for .py script files

• Ensure you're using the latest EditorScreen.java with instance field commands
• Verify PythonIDE.getDisplay() method exists
• Check device MIDP 2.0 compatibility

• Device may not support FileConnection API
• IDE will still work but file operations disabled
• Storage info will show "JSR-75 not detected"

• Interpreter is simulated - only supports basic Python syntax
• Complex libraries and advanced features not supported
• Check syntax matches selected Python version (2 vs 3)

• Use Full Edit button for full-screen editing
• TextBox supports same 8000 char limit with better UX

• ✅ Full Edit mode (full-screen TextBox)
• ✅ Python 2 + Python 3 syntax support
• ✅ JSR-75 file I/O integration
• ✅ Developer name personalization
• ✅ Settings screen with version selector
• ✅ Animated splash screen v2
• ✅ Graphics demo with Canvas API

• Initial release
• Basic script execution
• Basic editor with keyword insertion
• Python 3 only
• Simple file operations

Platform: J2ME MIDP 2.0 / CLDC 1.1
APIs Used:

• javax.microedition.lcdui.* - UI components
• javax.microedition.rms.* - RecordStore persistence
• javax.microedition.io.file.* - JSR-75 FileConnection
• Low-level Canvas API for graphics

Author: DASH ANIMATION V2

• Python Software Foundation - Python language
• Java ME platform - MIDP/CLDC runtime

Last updated: 2024