[Tkinter] hour format

[geckoes]

I've created a Tkinter window with two Entries for formatting hours.
Their format are 24h and 12h ones.
It works correctly but I'm wondering if there are other ways to do that.

I'm working to date format as well.

Many thanks,

#!/usr/bin/env python3

import tkinter as tk

class Hours(tk.Tk):

    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        tk.Label(self, text="Clock Page").grid(row=0, column=0, columnspan=2)

        vcmd = (self.register(self.onValidate), '%d', '%s', '%S')

        tk.Label(self, text="12h format").grid(row=1, column=0)
        # Entry to insert a 12 hour format
        entry1 = tk.Entry(self, validate="key", validatecommand=vcmd, width=10, justify=tk.CENTER)
        entry1.bind("<KeyRelease>", self.hour_12)
        entry1.grid(row=1, column=1)

        tk.Label(self, text="24h format").grid(row=2, column=0)
        # Entry to insert a 24 hour format
        entry2 = tk.Entry(self, validate="key", validatecommand=vcmd, width=10, justify=tk.CENTER)
        entry2.bind("<KeyRelease>", self.hour_24)
        entry2.grid(row=2, column=1)

    def onValidate(self, d, s, S):
        # if it's deleting return True
        if d == "0":
            return True
        # Allow only digit, ":" and check the length of the string
        if ((S == ":" and len(s) != 2) or (not S.isdigit() and
                S != ":") or (len(s) == 3 and int(S) > 5) or len(s) > 4):
            self.bell()
            return False
        
        return True

    def hour_24(self, event):
        """
        Check and build the correct format hour: hh:mm in 24 format
        it keep in mind the 0x, 1x and 2x hours and the max minutes can be 59
        """

        # get the object that triggered the event
        s = event.widget
        # if delete a char do return ok or delete the char ":" and the previous number
        if len(s.get()) == 2 and event.keysym=="BackSpace":
            s.delete(len(s.get())-1, tk.END)
        if event.keysym=="BackSpace":
            return
        
        # check the hour format and add : between hours and minutes
        if len(s.get()) == 1 and int(s.get()) > 2:
            s.insert(0, "0")
            s.insert("end", ":")
        elif len(s.get()) == 2 and int(s.get()) < 24:
            s.insert(2, ":")
        elif len(s.get()) >= 2 and s.get()[2:3] != ":":
            self.bell()
            s.delete(1, tk.END)
       
    def hour_12(self, event):
        """
        Check and build the correct format hour: hh:mm in am, pm mode
        it keep in mind the 0x, 1x hours and the max minutes can be 59
        """

        # get the object that triggered the event
        s = event.widget

        # if delete a char do return ok or delete the char ":" and the previous number
        if len(s.get()) == 2 and event.keysym=="BackSpace":
            s.delete(len(s.get())-1, tk.END)
        if event.keysym=="BackSpace":
            return
        
        # check the hour format and add : between hours and minutes
        if len(s.get()) == 1 and int(s.get()) > 1:
            s.insert(0, "0")
            s.insert("end", ":")
        elif len(s.get()) == 2 and int(s.get()) <= 12:
            s.insert(2, ":")
        elif len(s.get()) >= 2 and s.get()[2:3] != ":":
            self.bell()
            s.delete(1, tk.END)

      
def main():
    app = Hours()
    app.mainloop()

if __name__ == '__main__':
    main()
else:
    print('I would like to be the main module.')

[ichabod801]

Look into the datetime module. It has date, time, and datetime objects, all of which have easy ways to format them for text output.