Why Does My Tkinter Entry Widget Return a `NoneType` Error When Using `.get()`?

Why does entryBox become None when attempting to retrieve its value using .get()?

When attempting to retrieve the value of the entryBox widget using .get(), the error message "AttributeError: 'NoneType' object has no attribute 'get'" is encountered. This error occurs because the entryBox object is assigned the value None due to the improper usage of .grid().

In Tkinter, when a widget's layout is specified using the .grid(), .pack(), or .place() methods, the result of the expression is None. In this case, entryBox.grid() returns None, effectively assigning None to the entryBox variable.

To resolve this issue, the .grid() method should be used on a separate line from the instantiation of the widget. For instance:

entryBox = Entry(root, width=60)
entryBox.grid(row=2, column=1, sticky=W)

This ensures that the entryBox variable references the widget object, allowing you to retrieve its value using .get():

print(entryBox.get())

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