Randomly change the prompt in the Python interpreter

According to the docs, if you assign a non-string object to sys.ps1 then it will evaluate the str function of it each time:

If a non-string object is assigned to either variable, its str() is re-evaluated each time the interpreter prepares to read a new interactive command; this can be used to implement a dynamic prompt.

Well now it's obvious, you should make it dynamic! Make an object with a __str__ method where you can place any logic you want:

class Prompt:    def __str__(self):        # Logic to randomly determine string        return string

You can also make changes or insert things into this class as you go too. So for example, you could have a list of messages in Prompt that you append to, or change, and that will affect the console message.

Try this:

>>> import sys>>> import random>>> class RandomPrompt(object):...     prompts = 'hello >', 'hi >', 'hey >'...     def __repr__ (self): return random.choice(self.prompts)... >>> sys.ps1 = RandomPrompt()hello >11hi >22

For changing the prompt, we use

>>>import sys>>>sys.ps1 = '=>'=>

Now the way to do it randomly would be something like this:

import randomimport sysrandom_prompts = ['->', '-->', '=>', 'Hello->']sys.ps1 = random.choice(random_prompts)

To execute this when your python interpreter starts, you can follow this guide: https://docs.python.org/2/tutorial/appendix.html#the-interactive-startup-file