Question

我对tkinter相当陌生，能够获得以下代码。

from tkinter import *
from tkinter import filedialog
master = Tk()
v = IntVar()
v.set(1)
var1 = IntVar()
var2 = IntVar()
var3 = IntVar()
CategorySubmit= IntVar()
my_list = [{"Kitchen":var1},{"Electric Supply":var2},{"Books":var3}]
def get_boxes(value):
    #store the checked boxes for later use
    pass
def get_value(value):
    #print(value)
    if value=="Category":
        for widget in master.winfo_children():
            widget.destroy()
        row =1
        for i in my_list:
            Checkbutton(master, text=list(i.keys())[0], variable=list(i.values())[0]).pack()
            row+=1
        Button(master, text="Submit", variable=CategorySubmit,command=get_boxes).pack()
        #save the check boxes made by user into a list then quit master
    else:
        file_chosen =filedialog.askopenfilename(title='Please Select Input File', filetypes=[('Excel files', ('.xlsx', '.csv', '.xls', 'xlsm'))])
        print(f"Done: {file_chosen}")
        master.destroy()

MODES = [
("Choice 1","ID"),
("Choice 2","Category"),
("Choice 2","Full"),
]
choice_made= StringVar()
choice_made.set('Choice 1')
for text,mode in MODES:
    Radiobutton(master,text=text,variable=choice_made,value=mode).pack()
but = Button(master,text="Submit",command=lambda: get_value(choice_made.get()))
but.pack()

master.mainloop()
print(file_chosen) #gives undefined error ?

我需要将复选框中的值存储到列表中，以便以后使用。当master.mainloop()之外的变量名出现NameError: name 'file_chosen' is not defined时，我也会出错，

我的想法是，当选择“ Choice 1”或“ Choice 3”时，会给出文件提示，以便以后我可以继续执行脚本，否则，如果我将“ Choice 2” 3个复选框存储在列表中

Answer 1

file_chosen变量在get_value()函数内部。要扩展其范围，您必须声明为global：

def get_value(value):
    global file_chosen

将复选框存储到列表tkinter

1 个答案: