Setting the bounds of a Finder window with PyXA

finder_window_controller.py

import PyXA
app = PyXA.application("Finder")
window = app.windows()[0]

lock = False
old_w = 0
old_h = 0

while True:
    if window.position.y < 50 and lock is False:
        # Increase height of window when user drags it to the top
        (old_w, old_h) = window.bounds.size
        (x, y) = window.position
        window.set_property("bounds", ((x, y), (old_w, 2000)))
        lock = True

    if lock is True and window.position.y > 55:
        # Return to original size if user moves window down
        (x, y) = window.position
        window.set_property("bounds", ((x, y), (old_w, old_h)))
        lock = False