Generate images matching the physical size of a US dollar bill on that display

actual-size-dollar.py

from AppKit import NSScreen, NSDeviceSize, NSDeviceResolution
from Quartz import CGDisplayScreenSize

for i, screen in enumerate(NSScreen.screens(), 1):
    description = screen.deviceDescription()
    pw, ph = description[NSDeviceSize].sizeValue()
    mmw, mmh = CGDisplayScreenSize(description["NSScreenNumber"])
    ppiX = pw/mmw
    ppiY = ph/mmh
    dollarMmWidth = 155.956
    dollarMmHeight = 66.294
    dollarPxWidth = dollarMmWidth*ppiX
    dollarPxHeight = dollarMmHeight*ppiY

    newPage(dollarPxWidth,dollarPxHeight)
    saveImage(f'dollar-{i}.png')