time.sleep() 等效于 Tkinter [英] time.sleep() Equivalent on Tkinter

问题描述

我必须停止循环并在几秒钟后继续.我尝试使用 after()，但循环不会冻结.当我使用 time.sleep() (计算 tkinter)时，tkinter 冻结.有另一种方法或等效的 time.sleep() 函数而不冻结.

I have to stop a loop and resume after many seconds. I tried to use after(), but the loop don't freeze. And when I use time.sleep() (works out tkinter), tkinter freeze. Have another way or a function equivalent time.sleep() without freeze.

代码:

for message in listOfMessages:
    time.sleep(message.time)
    #manipulate message
    #change text widget

这会冻结我的 tkinter 应用程序.

This will freeze my tkinter app.

我尝试使用 after() 但 message.time 是一个浮点数:0.5054564 到 1.5234244.这是随机的.而after只支持int.我无法转换为 int，因为低数字会产生不同.如果我将 0.52342342 转换为 int: 523 ......我失去了其他的 42342

I tried to use after() but message.time is a float: 0.5054564 to 1.5234244. It's random. And after supports only int. I can't convert to int, because low numbers make differents. And if i convert 0.52342342 in int: 523... i lost the others 42342

这也不起作用:

def changes(#values):
    #manipulate message
    #change text widget

for message in listOfMessages:
    app.after(message.time, lambda: changes(#values))

有另一个等效的 time.sleep 函数，它不是冻结 tkinter 并且与 after() 不同吗?如果没有，有其他方法可以做到这一点吗?感谢关注.

Have another function equivalent time.sleep thats not freeze tkinter and is different that after()? If not, have another way to do this? Thanks for attention.

推荐答案

要创建一个类比:

for message in listOfMessages:
    time.sleep(message.time)
    change(message)

在 tkinter 中:

def update_widget(app, messages):
    message = next(messages, None)
    if message is None: # end of the loop
        return
    delay = int(message.time * 1000) # milliseconds
    app.after(delay, change, message) # execute body
    app.after(delay, update_widget, app, messages) # next iteration

update_widget(app, iter(listOfMessages))

如果你想等到 change(message) 结束后再继续循环:

If you want to wait until change(message) finishes before continuing the loop:

def iterate(message, app, messages):
    change(message)
    update_widget(app, messages)

def update_widget(app, messages):
    message = next(messages, None)
    if message is None: # end of the loop
        return
    delay = int(message.time * 1000) # milliseconds
    app.after(delay, iterate, message, app, messages)

update_widget(app, iter(listOfMessages))

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