Stoprun = 1时如何停止动画播放？

Question

我已经尝试过th1.join，但是那没有用，我不知道还能尝试什么。

另外，我需要将其作为一个函数

这是我的代码：

https://repl.it/@JamesGordon1/JuicyScentedCrypto（抱歉，发布时间太长）

Answer 1

在Linux上，只有添加两件事，它才对我有用

1. 循环后我必须设置stoprun = 1

   c = InKey()
   while not c == 27:
       c = InKey()
   
   stoprun = 1 # set after loop
   

2. 我必须在线程中使用print()-可能它需要\n（或者只是需要此IO函数来更改正在运行的线程）

   if stoprun == 1: # True
       print()  # have to send `\n`
       return
   

[我不知道为什么需要它，但是Python中的线程不能同时运行-一个线程使其他读操作变得多余-也许这些元素停止了一个线程并允许运行其他线程。

---

当然global stoprun内也需要stop()

---

from threading import Thread

import time
import sys
import os

# --- classes ---

class _GetCh:
    def __init__(self):
      try:
        self.impl = _GetChWindows()
      except ImportError:
        try:
          self.impl = _GetChMacCarbon()
        except ImportError:
          self.impl = _GetChUnix()
    def __call__(self):
      return self.impl()

class _GetChWindows:
    def __init__(self):
      import msvcrt
    def __call__(self):
      import msvcrt
      if msvcrt.kbhit():
        while msvcrt.kbhit():
          ch = msvcrt.getch()
        while ch in b'\x00\xe0':
          msvcrt.getch()
          ch = msvcrt.getch()
        return ord( ch.decode() )
      else:
        return -1

class _GetChMacCarbon:
    def __init__(self):
      import Carbon
      Carbon.Evt
    def __call__(self):
      import Carbon
      if Carbon.Evt.EventAvail(0x0008)[0]==0:
        return ""
      else:
        (what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
        return msg & 0x000000FF

class _GetChUnix:
    def __init__(self):
      import tty, sys, termios
    def __call__(self):
      import sys, tty, termios
      fd = sys.stdin.fileno()
      old_settings = termios.tcgetattr(fd)
      try:
        tty.setraw(sys.stdin.fileno())
        ch = sys.stdin.read(1)
      finally:
        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
      return ord(ch)

InKey = _GetCh()

# --- main ---

stoprun = 0 # False

def load_animation():
  load_str = "starting your console application "
  ls_len = len(load_str) 
  animation = "|/-\\"
  anicount = 0      
  i = 0
  while True:
    time.sleep(0.075) 
    load_str_list = list(load_str) 
    x = ord(load_str_list[i]) 
    y = 0                           
    if x != 32 and x != 46:          
      if x>90: 
        y = x-32
      else: 
        y = x + 32
      load_str_list[i]= chr(y) 
    res =''          
    for j in range(ls_len): 
      res = res + load_str_list[j] 
    sys.stdout.write("\r"+res + animation[anicount]) 
    sys.stdout.flush() 
    load_str = res 
    anicount = (anicount + 1)% 4
    i =(i + 1)% ls_len
    if stoprun == 1: # True
        print()  # have to send `\n`
        return

def stop():
  global stoprun

  print ("Press Esc to exit")

  c = InKey()
  while not c == 27:
    c = InKey()

  stoprun = 1 # have to be after loop

  return

th1 = Thread(target=load_animation)
th1.start()
stop()
#th1.join()

Answer 2

在stop中，您写：

  while not c == 27:
    c = InKey()
    stoprun = 1
  return

stoprun = 1将创建一个新的本地名称stoprun，而不用修改全局变量，因为您从未将stoprun标记为全局。这样做：

def stop():
    global stoprun
    ... # your code