In Python, how to change text after it's printed?

Question

I have a Python program I am writing and I want it to be able to change text after it is printed. For example, let\'s say I want to print \"hello\" and erase one letter eve

Answer 1

You could use dynamical stdout with getch() characters and loop

Example: https://asciinema.org/a/238478

Code:

# Script make you able to edit printed text
# stdin and stdout at the same time
# https://asciinema.org/a/238478
# https://gist.github.com/SoleSensei/05a97bbe8b75cd2368a8e6d5e00d6047
import sys
from getch import getch

def flush_append(char):
    # just append char to the end
    sys.stdout.write(char)
    sys.stdout.flush()

def flush_write(line):
    # clear all and rewrite line
    sys.stdout.write(f"\r{' '*100}\r")
    sys.stdout.flush()
    sys.stdout.write(line)
    sys.stdout.flush()

def interactive_input(line):
    flush_write(line)
    c = getch()
    while ord(c) not in (13, 3): # 13 - Enter, 3 - Ctrl+C
        if ord(c) in (127, 8): # 127,8 - Backspace (Unix, Windows)
            line = line[:-1]
            flush_write(line)
        else:
            # decode to string if byte
            c = c.decode('ascii') if str(c)[0] == 'b' else c
            line += c
            flush_append(c)
        c = getch()
    print() # add EOL
    return line


s = interactive_input('stdout editable line')