how to get the size of a tkinter window code example

Example 1: set window size tkinter

# Change window_name to the name of the window object, i.e. root
window_name.geometry("500x500")
# To ensure widgets resize:
widget_name.pack(fill="both", expand=True)

Example 2: get size of window tkinter

# Where w is a widget:
w.winfo_height()
w.winfo_width()