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Input no newline

An implementation of the built-in input function that doesn't echo the final newline character on Enter keypress. This is a repo showcasing my answer on StackExchange.

Functionality

  • Handles backspaces and forward deletes
  • Handles the Home and End keys to navigate to the beginning and end of responses
  • Handles arrow key navigation
  • Handles line history (may be broken)
  • Support for Windows, Linux and maybe macOS
  • Paste support
  • KeyboardInterrupts, EOFErrors and SIGSTPs are raised on certain keypresses (e.g. Ctrl-C) as expected

All of this was done without the help of PyPy, the Python interpreter written in Python. I tried to find their implementation of the built-in input function, and I failed, so I had to recreate most of the functionality from scratch, which was a pain.

A better solution to the problem of getting stuff printed on the same line as input would be my terminal-history repo. Or you could just look through the PyPy source code yourself and try to create your own function based on it (good luck with that).

Usage

import input_no_newline  # Naming things is hard

input_no_newline('this is a prompt. proceed? ')
print('this will be printed on the same line as the previous')

Output:

this is a prompt. proceed? foobar this is user inputthis will be printed on
the same line as the previous

To do

  • Handle/ignore all keypresses that don't affect input, otherwise they'll show up as control sequences