Python Tkinter中Calendar控件点击日期后get_date返回当日日期问题

问题出在你手动绑定日历内部标签的点击事件时，触发时机早于tkcalendar自身处理日期选择的逻辑——此时日历的选中状态还没更新，get_date()自然只会返回初始的当日日期。

直接用tkcalendar内置的<<CalendarSelected>>事件就能解决，这个事件会在日历完成日期选择更新后触发，确保能拿到正确的选中日期。修改后的代码如下：

import datetime
from tkinter import Frame, Button, Tk
from tkinter import simpledialog
from tkcalendar import Calendar


class DateDialog(simpledialog.Dialog):
    def __init__(self, parent, title, selected: datetime.date = datetime.date.today()):
        self.calendar = None
        self.selected_date = selected
        self.parent = parent
        self.type = title
        super().__init__(parent, title)

    def body(self, frame):
        horizontal_frame = Frame(self)
        self.calendar = Calendar(frame, selectmode='day',
                                 year=self.selected_date.year, month=self.selected_date.month,
                                 day=self.selected_date.day)
        cancel_button = Button(horizontal_frame, text='Cancel', width=5, command=self.cancel_pressed)
        self.bind('<Escape>', lambda event: self.cancel_pressed())
        # 改用内置的日期选中事件，替代手动绑定内部标签
        self.calendar.bind('<<CalendarSelected>>', self.option_changed)
        
        self.calendar.pack(side='left')
        cancel_button.pack(side='right')
        horizontal_frame.pack()
        frame.pack()
        return horizontal_frame

    def option_changed(self, *args):
        self.selected_date = self.calendar.get_date()
        self.destroy()

    def cancel_pressed(self):
        self.selected_date = None
        self.destroy()

    def buttonbox(self):
        pass


def main():
    root = Tk()
    test = DateDialog(root, 'testing').selected_date
    print(test)
    root.mainloop()


if __name__ == '__main__':
    main()

关键修改点： #

• 删除了遍历self.calendar._calendar绑定内部标签点击的代码，避免干扰tkcalendar的原生逻辑
• 替换为self.calendar.bind('<<CalendarSelected>>', self.option_changed)，利用内置事件确保获取到正确的选中日期
• 保留了ESC键取消、Cancel按钮取消的原有功能，同时减少了用户操作步骤

内容的提问来源于stack exchange，提问作者jordanthompson