可以在python中使用循环保存语法吗? [英] save syntax with loop in python possible?

问题描述

我想在 tkinter 中创建很多小部件.我目前为此使用了很多代码.有没有办法总结代码?但是，我仍然希望能够捕获每个小部件的价值.编号上升到 200...非常感谢！

I would like to create a lot of widgets in tkinter. I am currently using a lot of code for this. Is there a way to summarise the code? However, I would still like to be able to capture the value of each widgets. The numbering goes up to 200... Thanks a lot!

'''

    self.A1_access_measure_calculation = tk.IntVar()
    self.A1_access_measure = tk.Checkbutton(self.A_Frame_measure, text="A1", variable=self.A1_access_measure_calculation)
    self.A1_access_measure.grid(row =2, column =0, sticky = "W",padx=25, pady=4) 
    self.A1_access_measure.bind('<ButtonRelease-1>', lambda A1: self.enable_measure_specification("A1"))
    
    self.A2_access_measure_calculation = tk.IntVar()
    self.A2_access_measure = tk.Checkbutton(self.A_Frame_measure, text="A2", variable=self.A2_access_measure_calculation)
    self.A2_access_measure.grid(row =3, column =0, sticky = "W",padx=25, pady=4) 
    self.A2_access_measure.bind('<ButtonRelease-1>', lambda A2: self.enable_measure_specification("A2"))

    self.A3_access_measure_calculation = tk.IntVar()
    self.A3_access_measure = tk.Checkbutton(self.A_Frame_measure, text="A3", variable=self.A3_access_measure_calculation)
    self.A3_access_measure.grid(row =4, column =0, sticky = "W",padx=25, pady=4) 
    self.A3_access_measure.bind('<ButtonRelease-1>', lambda A3: self.enable_measure_specification("A3"))

    self.A4_access_measure_calculation = tk.IntVar()
    self.A4_access_measure = tk.Checkbutton(self.A_Frame_measure, text="A4", variable=self.A4_access_measure_calculation)
    self.A4_access_measure.grid(row =5, column =0, sticky = "W",padx=25, pady=4) 
    self.A4_access_measure.bind('<ButtonRelease-1>', lambda A4: self.enable_measure_specification("A4"))
    
    self.A5_access_measure_calculation = tk.IntVar()
    self.A5_access_measure = tk.Checkbutton(self.A_Frame_measure, text="A5", variable=self.A5_access_measure_calculation)
    self.A5_access_measure.grid(row =6, column =0, sticky = "W",padx=25, pady=4) 
    self.A5_access_measure.bind('<ButtonRelease-1>', lambda A5: self.enable_measure_specification("A5"))

'''

我还想总结一下 If 条件.

I would also like to summarise the If conditions.

'''

    if self.calculations["A1"].get() == 0 and event_measure == "A1":
        self.A1_Menu_blade_exchange.grid(row =2, column = 1, padx=3, pady=1, sticky = "W")
        self.A1_Menu_rubbing_marks.grid(row =2, column = 2, padx=3, pady=1, sticky = "W")

    if self.calculations["A1"].get() == 1 and event_measure == "A1":
        self.A1_Menu_blade_exchange.grid_forget()
        self.A1_Menu_rubbing_marks.grid_forget()
        self.A1_Menu_rubbing_marks_border.grid_forget()
        self.A1_blade_exchange_Type.set('')
        self.A1_rubbing_marks_Type.set('')
        self.A1_rubbing_marks_border_Type.set('')

    if self.calculations["A2"].get() == 0 and event_measure == "A2":
        self.A2_Menu_blade_exchange.grid(row =3, column = 1, padx=3, pady=1, sticky = "W")
        self.A2_Menu_rubbing_marks.grid(row =3, column = 2, padx=3, pady=1, sticky = "W")

    if self.calculations["A2"].get() == 1 and event_measure == "A2":
        self.A2_Menu_blade_exchange.grid_forget()
        self.A2_Menu_rubbing_marks.grid_forget()
        self.A2_Menu_rubbing_marks_border.grid_forget()
        self.A2_blade_exchange_Type.set('')
        self.A2_rubbing_marks_Type.set('')
        self.A2_rubbing_marks_border_Type.set('')

'''

推荐答案

代替每个 IntVar 和 CheckButton 的单独变量，定义一个 dict> 持有每组.

Instead of individual variables for each IntVar and CheckButton, define a dict to hold each set.

import functools  # Used later; see below


keys = [f"A{i}" for i in range(1, 200)]
self.calculations = {k: tk.IntVar() for k in keys}
self.access_measures = {k: tk.Checkbutton(self.A_Frame_measure, text=k, variable=self.calculations[k]) for k in keys}

然后您可以遍历 access_measures 字典，以使用适当的参数对每个字典调用 grid 和 bind.grid 的大部分参数都是常量，除了 row 值可以通过 enumerate 计算.棘手的部分是确保传递给 bind 的回调实际上具有传递给 enable_measure_specification 的 k 的当前值.

You can then iterate over the access_measures dictionary to call grid and bind on each with the appropriate arguments. Most of the arguments to grid are constant, except for the row value which can be computed by enumerate. The tricky part is making sure the callback passed to bind actually has the current value of k to pass to enable_measure_specification.

for r, (k, cb) in enumerate(self.access_measures.items(), start=2):
    cb.grid(row=r, column=0, sticky="W", padx=25, pady=4)
    cb.bind('<ButtonRelease-1>', functools.partial(self.enable_measure_specification, k))

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