[PYTHON] a basic python shell

ssshhh.py

import time
from contextlib import suppress
from subprocess import Popen, PIPE


HISTORY = []

def _execute_ls(given_args: list = []):
    final_args = ['ls'].extend(given_args)
    output = Popen(args=final_args or ['ls'], stdout=PIPE).communicate()[0]
    return output


def _execute_hs():
    print('\n'.join(HISTORY))


COMMANDS = {
    "help": "This is the help function, \nAvailable functions are:\n -ls to list file\n -hs to have the history",
    "ls": _execute_ls,
    "hs": _execute_hs,
}

inp = ''
while len(inp) == 0:
    inp = input("> ")
    with suppress(KeyError):
        if isinstance(COMMANDS[inp], (int, str)):
            print(COMMANDS[inp])
        else:
            if " " in inp:
                COMMANDS[inp[0]](inp[1:])
            else:
                COMMANDS[inp]()

        HISTORY.append(inp)
        inp = ''

    time.sleep(1)

# python3 main.py
# > help
#This is the help function, 
#Available functions are:
# -ls to list file
# -hs to have the history
#> ls
#> hs
#help
#ls
#> hs
#help
#ls
#hs
#>