Python3 NUIO

nuio is an attempt to add a standardized and easy-to-use user input/output interface for python.

The goal is to provide a set of classes with print-alike-operating methods and a few other methods for markup & co to deal with user input/output.

Features

Currently nuio is able to eal with POSIX Terminals. The corresponding classes are in nuio.input.terminal and nio.output.terminal.

Philosopy

nuio tries to keep stuff as simple as possible, but it requires python3.5.1+ language features.

Any blocking user-input is done using async features, this will become handy in future.

Plans

The following features should be added:

• curses based I/O
• an AJAX based I/O system
• non-POSIX terminals
• fancy frames for BlockOutput

Example

This is a simple example for nuio:

#!/usr/bin/python3

from nuio.input.terminal import POSIXTerminalInput
from nuio.output.terminal import TerminalOutput, ESCAPES, TerminalBlockOutput
import asyncio, shutil


async def main():
        width, height = shutil.get_terminal_size()

        # an output device
        out = TerminalBlockOutput(height - 10, width)
        out.print("This is a test")

        # input devices require an output device to handle prompts.
        inp = POSIXTerminalInput(out)

        data = await inp.input_int(prompt = "enter an integer > ")

        # You are able to use a bunch of ANSI escape sequences.
        # Usually you should use nuio.output.terminal.colors instead,
        # this will be compatible with other output devices.

        out.print_colored(ESCAPES["underline"], "you entered:", data)

        data = await inp.input_int(prompt = "enter an integer [4-100] > ",
                        range = range(4, 100))
        out.print_colored(ESCAPES["fg_red"], "you entered:", data)

        data = await inp.input_float(prompt = "enter an float [4-100] > ",
                        range = range(4, 100))
        out.print_colored(ESCAPES["bg_cyan"] + ESCAPES["fg_black"], "you entered:", data)



# Usually you should make the input async,
# but to simplify this the complete main function is async.
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
loop.close()