The following coding executes perfectly. However when I make it into a function within a larger program with the first line reading: def get_filename_changes(): the prefix_var.get() in the done_clicked() function no longer gets the data that I entered. I tried declaring var_get as a global variable but that made not difference.
I would greatly appreciate a solution to this problem.
import tkinter as tk
from tkinter import ttk
from tkinter.messagebox import showinfo
# root window
root = tk.Tk()
root.geometry("500x400")
root.resizable(False, False)
root.title('Modify new filenames')
prefix = tk.StringVar()
insertion = tk.StringVar()
deletion = tk.StringVar
def done_clicked():
prefix_value = prefix.get()
msg = f'You entered : {prefix_value}'
showinfo(title='Information', message=msg)
return
change_filename = ttk.Frame(root)
change_filename.pack(padx=10, pady=10, fill='x', expand=True)
prefix_label = ttk.Label(change_filename, text="Count of filename characters to be moved from prefix to suffix:")
prefix_label.pack(fill='x', expand=True)
prefix_entry = ttk.Entry(change_filename, textvariable=prefix)
prefix_entry.pack(fill='x', expand=True)
prefix_entry.focus()
done_button = ttk.Button(change_filename, text="Done", command=done_clicked)
done_button.pack(fill='x', expand=True, pady=10)
root.mainloop()
I’ve edited your post for readability. I hope the code is correct, but I can’t guarantee that and it may need some further formatting – apologies if that is the case! Python is whitespace-sensitive, so just pasting every line without whitespace, as was done, results in broken code, which in turn makes it difficult to provide help.
When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
Thank you for your attention. Here is my coding again.
# This is a stripped down Python program for getting input from the user.
# It recognizes the input from the user.
# However when this same coding is inserted as a function in a large program
# it no longer recognizes the input from the user.
import tkinter as tk
from tkinter import ttk
from tkinter.messagebox import showinfo
# root window
root = tk.Tk()
root.geometry("500x400")
root.resizable(False, False)
root.title('Modify new filenames')
prefix = tk.StringVar()
def done_clicked():
prefix_value = prefix.get() # pick up what the user entered
print("You entered " + str(prefix_value))
change_filename = ttk.Frame(root)
change_filename.pack(padx=10, pady=10, fill='x', expand=True)
prefix_label = ttk.Label(change_filename, text="Count of filename prefix characters")
prefix_label.pack(fill='x', expand=True)
prefix_entry = ttk.Entry(change_filename, textvariable=prefix)
prefix_entry.pack(fill='x', expand=True)
prefix_entry.focus()
# Done button
done_button = ttk.Button(change_filename, text="Done", command=done_clicked)
done_button.pack(fill='x', expand=True, pady=10)
root.mainloop()
Looks like you left out the “entry” part of your prefix variable name. So your prefix_value = prefix.get() needs to read prefix_value = prefix_entry.get()
