How to Create a Prefilled Input Function in Python for Linux Systems?

Input Editing in Python

Python's input() and raw_input() functions don't natively allow for prefilled input editing. However, in Linux systems, the readline module can be utilized to create an rlinput function that provides this functionality.

The rlinput function takes two arguments:

• prompt: The prompt to display to the user.
• prefill: The initial value to display in the input field.

Here's an example of how to use this function:

<code class="python">import readline

def rlinput(prompt, prefill=''):
    readline.set_startup_hook(lambda: readline.insert_text(prefill))
    try:
        return input(prompt)  # or raw_input in Python 2
    finally:
        readline.set_startup_hook()

folder = rlinput('Folder name: ', 'Download')</code>

This code will display the following prompt to the user:

Folder name: Download

If the user presses Enter without typing anything, the default value "Download" will be returned. If they want to edit it to "Downloads," they can simply add the letter 's' and press Enter.

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