from tkinter import *

if __name__ == '__main__':
    # create the tk
    the_tk = Tk()

    # create a frame
    the_frame = Frame(master=the_tk)

    # configure the frame's row options
    the_row_index = 0
    the_value = 1 ## non-zero value will cause the error below
#    the_frame.rowconfigure(the_row_index, pad=the_value) ## cause error belowe
#    the_frame.rowconfigure(the_row_index, minsize=the_value) ## cause error belowe
#    the_frame.rowconfigure(the_row_index, uniform=the_value) ## only this will not cause error
    the_frame.rowconfigure(the_row_index, weight=the_value) ## cause error belowe

    # get the frame's rowconfigure info for row 0
    the_rowconfigure_info = the_frame.rowconfigure(the_row_index)
    ## if |the_value| above is non-zero, cause error |TypeError: argument of type 'int' is not iterable|

    # print the rowconfigure info
    print(the_rowconfigure_info)

    # run event loop
    the_tk.mainloop()