New submission from Steven D'Aprano <[email protected]>:
When asking for user input, it is often very helpful to be able to pre-populate
the user's input string and allow them to edit it, rather than expecting them
to re-type the input from scratch.
I propose that the input() built-in take a second optional argument, defaulting
to the empty string. The first argument remains the prompt, the second argument
is the initial value of the editable text.
Example use-case:
pathname = "~/Documents/untitled.txt"
pathname = input("Save the file as...? ", pathname)
On POSIX systems, this can be done with readline:
import readline
def myinput(prompt, initial=''):
readline.set_startup_hook(lambda: readline.insert_text(initial))
try:
response = input(prompt)
finally:
readline.set_startup_hook(None)
return response
but it requires readline (doesn't exist on Windows), and it clobbers any
pre-existing startup hook the caller may have already installed.
----------
messages: 344701
nosy: steven.daprano
priority: normal
severity: normal
status: open
title: Pre-populate user editable text in input()
type: enhancement
versions: Python 3.9
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Python tracker <[email protected]>
<https://bugs.python.org/issue37161>
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