Python ttk.Progressbar [英] Python ttk.Progressbar

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本文介绍了Python ttk.Progressbar的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

获取进度条开始时我遇到麻烦。我已经在互联网上找到了答案,并尝试了多种方式进行了几个小时,但是已经收到了错误,例如:


TypeError:unbound必须使用Progressbar实例调用方法start()作为第一个参数(没有任何代替)



TypeError:未绑定的方法start()必须使用Progressbar实例作为第一个参数得到了NoneType实例)



AttributeError:'NoneType'对象没有属性'stop'


我对Python很新,所以如果有人能指出我正确的方向,将非常感激。



这是(本质上)我的代码:

 从Tkinter导入* 
import ttk

def foo():
#make progressbar从这里开始
do_stuff()
#make progressbar end here


root = Tk()
root.title( foo)

mainfr ame = ttk.Frame(root,padding =3 3 12 12)
mainframe.grid(column = 0,row = 0,sticky =(N,W,E,S))
主机.columnconfigure(0,weight = 1)
mainframe.rowconfigure(0,weight = 1)
prog = ttk.Progressbar(mainframe,mode ='indeterminate')。grid(column = 1,row = 100,sticky = W)

ttk.Button(mainframe,text =Check,command = foo).grid(column = 1,row = 100,sticky = E)

for mainframe.winfo_children()中的child:
child.grid_configure(padx = 5,pady = 5)
root.bind('<返回>',检查)


root.mainloop()


解决方案

您的prog变量不包含进度条,因为您调用了返回None的grid方法。这就解释了

  AttributeError:'NoneType'对象没有属性'stop'

将您的代码更改为

  prog = ttk .Progressbar(mainframe,mode ='indeterminate')
prog.grid(column = 1,row = 100,sticky = W)

之后,您可以通过

  prog.start()$启动进度条b $ b  


I am having trouble with getting the progressbar to start. I have scoured the internet for answers, and have tried multiple ways for hours, but have been rewarded with errors such as:

TypeError: unbound method start() must be called with Progressbar instance as first argument (got nothing instead)

TypeError: unbound method start() must be called with Progressbar instance as first argument (got NoneType instance instead)

AttributeError: 'NoneType' object has no attribute 'stop'

I am fairly new to Python, so if anyone could point me in the right direction that would be very much appreciated.

Here is (essentially) my code:

    from Tkinter import *
    import ttk

    def foo():
        #make progressbar start here
        do_stuff()
        #make progressbar end here


    root = Tk()
    root.title("foo")

    mainframe = ttk.Frame(root, padding="3 3 12 12")
    mainframe.grid(column=0, row=0, sticky=(N, W, E, S))
    mainframe.columnconfigure(0, weight=1)
    mainframe.rowconfigure(0, weight=1)
    prog = ttk.Progressbar(mainframe, mode='indeterminate').grid(column=1, row=100, sticky=W)

    ttk.Button(mainframe, text="Check", command=foo).grid(column=1, row=100, sticky=E)

    for child in mainframe.winfo_children():
        child.grid_configure(padx=5, pady=5)
    root.bind('<Return>', check)


    root.mainloop()

解决方案

Your prog variable does not contain the progressbar because you call the grid method which does return None. That does explain the

AttributeError: 'NoneType' object has no attribute 'stop'

change your code to

prog = ttk.Progressbar(mainframe, mode='indeterminate')
prog.grid(column=1, row=100, sticky=W)

after that you can start the Progressbar in foo via

prog.start()

这篇关于Python ttk.Progressbar的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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