Project of T9 keyboard which is controlled by numpad keyboard buttons. Application takes sequence of digits, convert it to corresponding letters combos and use Trie tree search to match sequence with potent words. When user choose a phrase from available predicted words search results, it will be written to the screen.
Using application to type in notepad:
- To run project this code, you need Python 3.10 + (usage of match/case feature).
- Program runs only on windows platform (due to problems on Linux keys signal suppression)
cd <main project directory>
pip install -r requirements.txt
python run.py
- Install module from pypi
pip install t9keyboard
Default key actions for T9 mode.
"""
+-------+-------+-------++-------+
| 7 | 8 | 9 || + |
| .?! | ABC | DEF || |
+-------+-------+-------+| |
| 4 | 5 | 6 || BACK |
| GHI | JKL | MNO || SPACE |
+-------+-------+-------++-------+
| 1 | 2 | 3 |
| PQRS | TUV | WXYZ |
+-------+-------+-------+
| 0 | . |
| SPACE |SWITCH |
+-------+-------+-------+
"""
Digit key 7 :
- type Dot sign
Digit keys 8, 9, 4, 6, 7, 1, 2, 3 :
- Add digit to queue.
Dot key (Del):
- switch word hint (phrase)
Digit key 0 :
- Accept current hint phrase. Then write phrase as keyboard output
Plus key + :
- Backspace
Pytest is configured to be runned from main project directory. To run tests, use the following command.
cd <main project directory>
pytest