Convert combobox user input in to date with tkinter

[Ame]

Hi!
I'm having a little bit of difficulty with a couple of things with my script:

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from datetime import datetime from tkinter.ttk import * from tkinter import * from openpyxl import *     class Application(Tk):    def __init__(self, *args, **kwargs):        Tk.__init__(self, *args, **kwargs)          d29 = list(range(1, 30))        d30 = list(range(1, 31))        d31 = list(range(1, 32))            self.months = dict(            January=d31,            February=d29,            March=d31,            April=d30,            May=d31,            June=d30,            July=d31,            August=d31,            September=d30,            October=d31,            November=d30,            December=d31)          self.lbl_birth = Label(self, text="Birthday:", font=('times', 14))        self.lbl_birth.grid(row=1, column=1)          self.cb_day = Combobox(self, values=self.months["January"])        self.cb_day.grid(row=1, column=2)        self.cb_day.set("1")          self.cb_month = Combobox(self, values=[*self.months])        self.cb_month.bind('<<ComboboxSelected>>', self.update)        self.cb_month.grid(row=1, column=3)        self.cb_month.set("January")          self.cb_year = Combobox(self, values=list(range(1996, 2006)))        self.cb_year.grid(row=1, column=4)        self.cb_year.set("2000")            items = [self.lbl_birth, self.cb_day, self.cb_month, self.cb_year]        for t in items:            self.grid_columnconfigure(t, weight=1)            self.grid_rowconfigure(t, weight=1)      def update(self, event):        self.cb_day["values"] = self.months[self.cb_month.get()]        self.cb_day.set("1")     if __name__ == "__main__":    app = Application()    app.title('My Birthday App')    app.mainloop()

When I'm writing in excel using this code:

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self.bday = self.cb_day.get(), self.cb_month.get(), self.cb_year.get() self.birthday = str(self.bday) sheet.cell(row=3, column=5).value = self.birthday

I get something like this:

1	('1', 'January', '2000')

I've tried strftime and strptime to convert self.bday in a proper date format but without success (I always get some errors). Also I'm trying to calculate the age in years with this:

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today_year = datetime.now().strftime('%Y')   age = int(today_year) - int(self.cb_year.get()) print(age)

It kinda works, but I always get back "20", as if self.cb_year.get() only gives me back the default year i put in set() and not the user input.
I really can't solve this by myself so thank you all for your help!

[Yoriz]

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from datetime import datetime   day, month, year = ('1', 'January', '2000') mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y') print(mydate) today = datetime.now() print(today) years = today.year - mydate.year print(years)

Output:
2000-01-01 00:00:00
2020-06-29 22:21:04.644274
20

[Ame]

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from datetime import datetime   day, month, year = ('1', 'January', '2000') mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y') print(mydate) today = datetime.now() print(today) years = today.year - mydate.year print(years)

Output:
2000-01-01 00:00:00
2020-06-29 22:21:04.644274
20

Thanks! That worked, but I'm only getting the date based on 2000-01-01. When I try to change the month it gives me back this error:
"Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Program Files (x86)\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
TypeError: update() takes 1 positional argument but 2 were given"
How can I get the all the age and the birthday that may be inserted?
Thanks again

[Ame]

I can't find the edit button so I apologize in advance for the double post, I've solved the traceback error, but I still only get the default date that I inputted (2000,01,01). How can I get the user info from the combobox?
Thank you for your help

[Yoriz]

Can you show the full code you have now

[Ame]

This is my code right now:

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from datetime import datetime from tkinter.ttk import * from tkinter import * from openpyxl import *     class Application(Tk):     def __init__(self, *args, **kwargs):         Tk.__init__(self, *args, **kwargs)           d29 = list(range(1, 30))         d30 = list(range(1, 31))         d31 = list(range(1, 32))           self.months = dict(             January=d31,             February=d29,             March=d31,             April=d30,             May=d31,             June=d30,             July=d31,             August=d31,             September=d30,             October=d31,             November=d30,             December=d31)           self.lbl_birth = Label(self, text="Birthday:", font=('times', 14))         self.lbl_birth.grid(row=1, column=1)           self.cb_day = Combobox(self, values=self.months["January"])         self.cb_day.grid(row=1, column=2)         self.cb_day.set("1")           self.cb_month = Combobox(self, values=[*self.months])         self.cb_month.bind('<<ComboboxSelected>>', self.update)         self.cb_month.grid(row=1, column=3)         self.cb_month.set("January")           self.cb_year = Combobox(self, values=list(range(1996, 2006)))         self.cb_year.grid(row=1, column=4)         self.cb_year.set("2000")           day, month, year = self.cb_day.get(), self.cb_month.get(), self.cb_year.get()         mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y')         today = datetime.now()         years = today.year - mydate.year                 def update(self, event):         self.cb_day["values"] = self.months[self.cb_month.get()]         self.cb_day.set("1")     if __name__ == "__main__":     app = Application()     app.title('My Birthday App')     app.mainloop()

Thank you

[Yoriz]

Your code is grabbing the values of the Combobox's immediately after creating them.
You need to have a GUI selection made first and then possibly a button to click to submit the relevant Combobox selections.
The event from clicking the button would then read the current Combobox values.

---

I think I see now that you want the year calculated when any combobox value changes

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from datetime import datetime from tkinter.ttk import * from tkinter import * from openpyxl import *       class Application(Tk):     def __init__(self, *args, **kwargs):         Tk.__init__(self, *args, **kwargs)            d29 = list(range(1, 30))         d30 = list(range(1, 31))         d31 = list(range(1, 32))            self.months = dict(             January=d31,             February=d29,             March=d31,             April=d30,             May=d31,             June=d30,             July=d31,             August=d31,             September=d30,             October=d31,             November=d30,             December=d31)            self.lbl_birth = Label(self, text="Birthday:", font=('times', 14))         self.lbl_birth.grid(row=1, column=1)            self.cb_day = Combobox(self, values=self.months["January"])         self.cb_day.bind('<<ComboboxSelected>>', self.update)         self.cb_day.grid(row=1, column=2)         self.cb_day.set("1")            self.cb_month = Combobox(self, values=[*self.months])         self.cb_month.bind('<<ComboboxSelected>>', self.update)         self.cb_month.grid(row=1, column=3)         self.cb_month.set("January")            self.cb_year = Combobox(self, values=list(range(1996, 2006)))         self.cb_year.bind('<<ComboboxSelected>>', self.update)         self.cb_year.grid(row=1, column=4)         self.cb_year.set("2000")                                def update(self, event):         day, month, year = self.cb_day.get(), self.cb_month.get(), self.cb_year.get()         mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y')         today = datetime.now()         years = today.year - mydate.year         print(f'Years: {years}')       if __name__ == "__main__":     app = Application()     app.title('My Birthday App')     app.mainloop()

[Ame]

Thank you, it worked! I'm very happy: I've finish my first app thanks to you. I've only a couple of question, but they are really just about style, you've already help me a lot so don't mind me if I bother you too much. My questions are:
Is there a way to have a leading zero on the day of the month? Basically add it in this part.

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d29 = list(range(1, 30))        d30 = list(range(1, 31))        d31 = list(range(1, 32))

And also is there a way to format the date without all the zero? From this 01/01/2000 00:00:00 to this 01/01/2000.
Once again, you help me a lot! Thank you

[Yoriz]

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from datetime import datetime    day, month, year = ('1', 'January', '2000') mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y') print(mydate.strftime('%d/%m/%Y'))     d29 = list(f'{num:02}' for num in range(1, 30)) print(d29)

Output:
01/01/2000
['01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29']