KeypunchBot

A Telegram bot that generates images of punched cards or punched tape with user-defined text encoded. It can be accessed via the following link: t.me/keypunch_bot.

KeypunchBot supports multiple encodings listed below. To see all characters supported by currently selected encoding use /characters command.

Encoding name	Command to activate	Storage medium
ASCII	/ascii	80-column punched card
EBCDIC	/ebcdic	80-column punched card
EBCDIC-880	/ebcdic880	80-column punched card
ITA-2 (CCITT-2)	/ita2	5-bit punched tape
MTK-2	/mtk2	5-bit punched tape

KeypunchBot can generate images and send them as a photo or a document as PNG (\png) or JPEG (\jpeg) files. It can also generate text files (\text).

To see the list of all supported commands send \help command.

Generated output examples

Punched card (EBCDIC encoding)

Punched tape (ITA-2 encoding)

Dependencies

The KeypunchBot uses the following open-source libraries:

• click
• Pillow
• pymongo
• python-telegram-bot
• PyYAML
• Tornado

The following tools and libraries were used during the project's development:

• pytest
• pylint
• mypy
• mongomock