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H/W4

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zefirova.am 2023-11-17 01:16:33 +03:00
parent 8c988eeefd
commit 80c8c54b61
1 changed files with 18 additions and 7 deletions
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25
noblocking_turtle_shell.py
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@ -1,18 +1,29 @@
import cmd import cmd
import threading import threading
from queue import Queue from queue import Empty, Queue
from equipment.turtle_device import TurtleDevice from equipment.turtle_device import TurtleDevice
class TurtleDeviceThread(threading.Thread): class TurtleDeviceThread(threading.Thread):
# TODO(Homework 4)
def __init__(self): def __init__(self):
super().__init__() super().__init__()
self.device = TurtleDevice() self.device = TurtleDevice()
self.queue = Queue() self.queue = Queue()
def run(self):
while True:
try:
item = self.queue.get()
except self.queue.Empty:
continue
else:
if (item == 'exit'):
break
self.device.execute(item[0], item[1:])
self.queue.task_done()
class NoBlockingTurtleShell(cmd.Cmd): class NoBlockingTurtleShell(cmd.Cmd):
intro = 'Welcome to the turtle shell. Type help or ? to list commands.\n' intro = 'Welcome to the turtle shell. Type help or ? to list commands.\n'
@ -20,16 +31,16 @@ class NoBlockingTurtleShell(cmd.Cmd):
file = None file = None
def __init__(self, turtle_thread: TurtleDeviceThread): def __init__(self, turtle_thread: TurtleDeviceThread):
pass # TODO(Homework 4) self.turtle_thread = TurtleDeviceThread()
def do_execute(self, arg): def do_execute(self, arg):
pass # TODO(Homework 4) self.turtle_thread.queue.put(arg)
def do_exit(self, arg): def do_exit(self, arg):
pass # TODO(Homework 4) self.turtle_thread.queue.put('exit')
if __name__ == '__main__': if __name__ == '__main__':
turtle_thread = TurtleDeviceThread() turtle_thread = TurtleDeviceThread()
# TODO(Homework 4: Correct start thread) turtle_thread.start()
NoBlockingTurtleShell(turtle_thread).cmdloop() NoBlockingTurtleShell(turtle_thread).cmdloop()