Advanced_Python/advanced-python-homework-2023
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modified: noblocking_turtle_shell.py

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vviora 2023-11-17 17:12:10 +03:00
parent 5b578b6fde
commit 80be82544c
1 changed files with 16 additions and 5 deletions
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21
noblocking_turtle_shell.py
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@ -1,7 +1,7 @@
import cmd import cmd
import threading import threading
from queue import Queue from queue import Queue, Empty
from equipment.turtle_device import TurtleDevice from equipment.turtle_device import TurtleDevice
@ -13,6 +13,17 @@ class TurtleDeviceThread(threading.Thread):
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()