line order

[Ben Bush]

I run the following code and the red line and black line show at the same
time. is there anyway to show the red line first, then the black line? for
example, after I click the 'enter' key?
 from Tkinter import *
tk = Tk()
canvas = Canvas(tk, bg="white", bd=0, highlightthickness=0)
canvas.pack(fill=BOTH, expand=YES)
canvas.create_line(100, 200, 350, 200, arrow=LAST,fill='red')
canvas.create_line(100, 0, 100, 200, arrow=FIRST)
tk.mainloop()
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