python - AttributeError: 'NoneType' object has no attribute 'insert'

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65906527/attributeerror-nonetype-object-has-no-attribute-insert

Answer 1

c is equal to the return value of grid() not the return value of Entry(). You therefore never saved a reference to the entry box itself.

You should split the calls of creation and layout as such:

c = Entry(root, width=25, borderwidth=5, font=('Helvetica 18 bold'), bg="#E8E8E8")
c.grid(row=0, column=0, columnspan=8, padx=10, pady=10)