AttributeError while using tk.Entry widget - either grid() or focus

I have a tk.Entry widget, that I need to have focus_set() on, and also need the function grid(). Here's the piece of code:

e = Entry(...).focus_set()
e.grid(columnspan=3)

But the interpreter gives this problem:

Traceback (most recent call last):
  File "D:\...\main.py", line 10, in <module>
    e.grid(columnspan=3)
AttributeError: 'NoneType' object has no attribute 'grid'

Also, if I try to put all the functions in one line it gives same error for the function that goes after first (error for grid() if Entry(...).focus_set().grid(...) and same in reverse). What do I do?

CodePudding user response：

focus_set() does not return the Entry itself, but None, so you simply said can't chain the calls like that.

Instead, just call them separately.

e = Entry(...)
e.focus_set()
e.grid(columnspan=3)