So basically I am reading a valuefrom a text file which is displayed on the Profile frame using a label. def view_value(self): self.user = self.controller.user self.view_value()
with open(self.user + '.txt', "r") as f:
value_line = 2
for i, line in enumerate(f):
if i == value_line:
self.value.set(line)
self.value.config(textvariable=line)
When I go to a different frame to calculate this value again, it will update the text file with the newly calculated value. However, when I go back to the previous page using the back button - the old value is still there. To get the new value to appear I need to reopen/re-run the program.
Is it possible to have the newly updated value displayed on the page without restarting the application? I have tried calling my view_value method to try and update the value and also tried configuring the label from the other class but wasn't able to get it working.
I also realise there are probably a million things wrong with my code, I am very new to Python so apologies!
You need to update the StringVar Profile.allowance in order to make the display in Profile page updated. The simple way is adding the following statement before self.controller.show_frame(Profile) in write_to_file() of CalculateAllowance class:
self.controller.frames[Profile].allowance.set(self.user_data[2])
Also you need to fix the following issues in your code:
self.view_allowance() inside view_allowance() in Profile class as it will cause infinite recursion problem.self.holiday_allowance_amount.config(textvariable=line) in view_allowance() as it wrongly reassigns textvariable to a string.