if声明、TTK

Question

ytac=[]

import tkinter as tk
from tkinter import ttk


class App(tk.Tk):
  def __init__(self, title: str):
    super().__init__()
    self.title(title)

    self.style = ttk.Style(self)
    self.style.theme_use("classic") 

    self.frame0 = ttk.Frame(self, padding=(5,5))
    self.frame1 = ttk.Frame(self, padding=(5,5))
    self.frame2 = ttk.Frame(self, padding=(5,5))
    self.frame3 = ttk.Frame(self, padding=(5,5))

    self.initialize_frames()
    self.initialize_widgets()
    self.geometry("450x400")
  

    
  def initialize_widgets(self):
    self.uno_label.grid(row=0, column=0, sticky=tk.NSEW, padx=10, pady=10, columnspan=10)
    
  def make_frame0(self):
    self.coding_button = ttk.Button(self.frame0, text="Coding", command=self.get)
    self.coding_button.grid(row=1, column=5)

  def make_frame1(self):
    self.gamedev_button = ttk.Button(self.frame1, text="Game Development", command=self.get)
    self.gamedev_button.grid(row=1 ,column=5)

  def make_frame2(self):
    self.digitalmedia_button = ttk.Button(self.frame2, text="Digital Media", command=self.get)
    self.digitalmedia_button.grid(row=1, column=5)

  def make_frame3(self):
    self.uno_label = ttk.Label(self, text="Hello fellow Ytacer or so they call 'it. Ytac is a 4 week journey that allows to \ntake a Stem class of your choosing from a not so wide range of classes. \nIt's also unfourtenetly not sponsored by Dr.Pepper(f in the chat). 'Are you ready \nto start your expedition? What's 'my name you 'ask? I have 'no name but you \ncan call me Took. 'And also, Mel 'sucks and 'shouldn't be 'appreciated \nthroughout the rest of the cohort. *ahem*, they're 3 pathways to choose from,\n Coding(1), Game Development(2), Digital Media(3). Choose from one of these \nby clicking on the respective button. But before you do that I would like for us \nto introduce our sponsors RAID SHADOW LEGE-.") 
  

    
  def initialize_frames(self):
    self.make_frame0()
    self.make_frame1()
    self.make_frame2()
    self.make_frame3()

    self.frame0.grid(row=4, column=0)
    self.frame1.grid(row=4, column=1)
    self.frame2.grid(row=4, column=2)

  def get(self):
     if self.coding_button:
       print("ok")
     elif self.gamedev_button:
       print("poyo") 
     elif self.digitalmedia_button:
       print("GUH-HUH")
      

if __name__ == "__main__":
    app = App("YTAC")
    app.mainloop()

这个def函数将只打印出第一个字符串，而不是其他两个，即使我按下了所有相应的按钮。

​

期望对应的字符串在我按下相应的按钮后打印出来。我试图将私生子改成自己的if语句，但这导致了更多的问题。

Answer 1

如果没有看到所有的代码，我就无法准确地诊断您的问题，但它可能在于您如何使用Tkinter按钮。

另一个似乎与你的To Detect Button Press In Python Tkinter Module相似的问题

关于Tkinter按钮的非常全面的教程：https://www.tutorialspoint.com/python/tk_button.htm

本质上，Tkinter按钮的定义如下：

buttonName = tkinter.Button(master, option1=value1, option2=value1...)

Tkinter按钮没有“按下”变量，相反，您可以设置在按下按钮时运行的命令(函数)。

buttonName = tkinter.Button(master, command=function_name, option1=value1, option2=value2...)

注意:不要在函数名后面加上括号，因为那样会运行函数。唯一的例外是，如果有一个返回函数的函数

如果您想要在按下按钮时更改的全局变量，则类似于这样的函数可以工作：

global_var = False
def callback():
    global global_var
    global_var = not global_var
button = tkinter.Button(master, command=callback)

在上面的示例中，将master替换为Tkinter窗口的名称。