Question

我写了这段代码，应该询问用户他的所有文件是否都有相同的日期，如果是，他应该将他的日期写入网格。输入日期后，两个窗口都应该消失，我想保留日期。不幸的是，我没有设法让第一个输入框消失，在整个程序之后，输入日期再次为[]。

 from tkinter import *

    entry_date = []
            if amountfiles == 1:
                def moredates():
                    master.destroy()

                def setdate():
                    def entry_date():
                        entry_date = e1.get()
                        entry_date = str(entry_date)
                        print("Date for all files is: ",entry_date)
                        master.destroy()

                    def quit():
                        sys.exit()

                    master = Tk()
                    Label(master, text="Please enter date (format YYYYMMDD, i.e. 20160824): ").grid(row=0)
                    e1 = Entry(master)
                    e1.grid(row=0, column=1)
                    Button(master, text='Quit', command=master.destroy).grid(row=3, column=1, sticky=W, pady=4)
                    Button(master, text='Insert', command=entry_date).grid(row=2, column=1, sticky=W, pady=4)
                    mainloop( )

                master = Tk()
                Label(master, text="Do all files have the same date?").grid(row=0)
                Button(master, text='No...', command=moredates).grid(row=2, column=0, sticky=W, pady=4)
                Button(master, text='Yes!', command=setdate).grid(row=1, column=0, sticky=W, pady=4)
                Button(master, text='Close & Contiune', command=master.destroy).grid(row=3, column=0, sticky=W, pady=4)
                mainloop( )

Answer 1

由于在master函数中重新分配了外setdate()个变量，调用master.destroy()只会关闭新master，而不是外master }。尝试修改函数setdate()，如下所示：

def setdate():
    def append_date():
        date = e1.get() # get the input entry date
        entry_date.append(date) # save the input date
        print("Date for all files is: ", date)
        master.destroy()

    top = Toplevel() # use Toplevel() instead of Tk()
    Label(top, text="Please enter date (format YYYYMMDD, i.e. 20160824): ").grid(row=0)
    e1 = Entry(top)
    e1.grid(row=0, column=1)
    Button(top, text='Quit', command=master.destroy).grid(row=3, column=1, sticky=W, pady=4)
    Button(top, text='Insert', command=append_date).grid(row=2, column=1, sticky=W, pady=4)
    master.wait_window(top) # use Tk.wait_window()

tkinter中的tkinter使值消失（python 3.4.3）

1 个答案: