Python Cmd cmdloop replacement to make it asyncio aware

aoicmd.py

#See https://stackoverflow.com/q/54425723/591064 for usage
async def adapter_cmdloop(self, intro=None):
    """Repeatedly issue a prompt, accept input, parse an initial prefix
    off the received input, and dispatch to action methods, passing them
    the remainder of the line as argument.

    """
    self.preloop()

    #This is the same code as the Python 3.7.2 Cmd class, with the
    #following changes
    #  - Remove dead code caused by forcing use_rawinput=False.
    #  - Added a readline in front of readline()
    if intro is not None:
        self.intro = intro
    if self.intro:
        self.stdout.write(str(self.intro)+"\n")
    stop = None
    while not stop:
        if self.cmdqueue:
            line = self.cmdqueue.pop(0)
        else:
            self.stdout.write(self.prompt)
            self.stdout.flush()
            line = await self.stdin.readline()
            if not len(line):
                line = 'EOF'
            else:
                line = line.rstrip('\r\n')
        line = self.precmd(line)
        stop = self.onecmd(line)
        stop = self.postcmd(stop, line)
    self.postloop()

In https://stackoverflow.com/questions/54425723/using-a-coroutine-for-pythons-cmd-class-input-stream you mention that "Implement write and flush as you see fit, but your readline should look like this:"

async def readline(self):
    return await my_implementation_of_readline()

Can you elaborate or provide example what this my_implementation... should actually be like?

It is whatever asynchronous function you already have will do. IIRC, I was using AsyncSSH to read the input from the client asynchronously.