now i wish Python had a way to add commands

[BashBedlam]

I think this comes pretty close to what you're asking. First, put this code in a file callednewcommands. Then start the interactive interpreter with this:PYTHONSTARTUP=newcommands python3. Then you can typec.dieorc.lsorc.pwd. Try it and then add all the commands you like.

import os
class Commands :
	@property
	def ls (self) :
		directory_list = os.listdir ()
		for filename in directory_list :
			print (filename)

	@property
	def pwd (self) :
		print (os.getcwd())

	@property
	def die (self) :
		exit ()

c = Commands ()
'''
	c.ls
	c.pwd
	c.die
'''