When pt.show() is called, it used to be the case that a window would pop up and stay perpetually until the end of program. Now, a window pops up, and persists only until the user presses escape, upon which the window closes and program execution continues.
When
pt.show()is called, it used to be the case that a window would pop up and stay perpetually until the end of program. Now, a window pops up, and persists only until the user presses escape, upon which the window closes and program execution continues.