golden hour

/opt/alt/python37/lib64/python3.7/idlelib

File/Folder	Size	Actions
CREDITS.txt	1.82 KB
ChangeLog	55.04 KB
HISTORY.txt	10.07 KB
Icons	-
NEWS.txt	47.65 KB
NEWS2x.txt	26.54 KB
README.txt	9.37 KB
TODO.txt	8.28 KB
__init__.py	396 B
__main__.py	159 B
__pycache__	-
autocomplete.py	8.74 KB
autocomplete_w.py	19.64 KB
autoexpand.py	3.14 KB
browser.py	8.12 KB
calltip.py	6.17 KB
calltip_w.py	6.99 KB
codecontext.py	11.06 KB
colorizer.py	12.69 KB
config-extensions.def	2.21 KB
config-highlight.def	2.8 KB
config-keys.def	10.65 KB
config-main.def	3.09 KB
config.py	37.28 KB
config_key.py	14.13 KB
configdialog.py	102.07 KB
debugger.py	18.66 KB
debugger_r.py	11.86 KB
debugobj.py	3.96 KB
debugobj_r.py	1.06 KB
delegator.py	1.02 KB
dynoption.py	1.97 KB
editor.py	64.08 KB
extend.txt	3.56 KB
filelist.py	3.8 KB
format.py	15.41 KB
grep.py	7.3 KB
help.html	60.76 KB
help.py	11.46 KB
help_about.py	8.77 KB
history.py	3.95 KB
hyperparser.py	12.58 KB
idle.py	454 B
idle.pyw	570 B
idle_test	-
iomenu.py	20.15 KB
macosx.py	9.44 KB
mainmenu.py	3.83 KB
multicall.py	18.21 KB
outwin.py	5.65 KB
parenmatch.py	7.04 KB
pathbrowser.py	3.12 KB
percolator.py	3.06 KB
pyparse.py	19.48 KB
pyshell.py	55.91 KB
query.py	14.55 KB
redirector.py	6.71 KB
replace.py	9.66 KB
rpc.py	20.64 KB
run.py	19.82 KB
runscript.py	8.58 KB
scrolledlist.py	4.36 KB
search.py	5.44 KB
searchbase.py	7.36 KB
searchengine.py	7.3 KB
sidebar.py	13.27 KB
squeezer.py	12.54 KB
stackviewer.py	4.35 KB
statusbar.py	1.41 KB
textview.py	6.65 KB
tooltip.py	6.41 KB
tree.py	15.97 KB
undo.py	10.79 KB
window.py	2.55 KB
zoomheight.py	4.1 KB
zzdummy.py	961 B

Edit: zoomheight.py

"Zoom a window to maximum height."

import re
import sys
import tkinter

class WmInfoGatheringError(Exception):
    pass

class ZoomHeight:
    # Cached values for maximized window dimensions, one for each set
    # of screen dimensions.
    _max_height_and_y_coords = {}

def __init__(self, editwin):
        self.editwin = editwin
        self.top = self.editwin.top

def zoom_height_event(self, event=None):
        zoomed = self.zoom_height()

if zoomed is None:
            self.top.bell()
        else:
            menu_status = 'Restore' if zoomed else 'Zoom'
            self.editwin.update_menu_label(menu='options', index='* Height',
                                           label=f'{menu_status} Height')

return "break"

def zoom_height(self):
        top = self.top

width, height, x, y = get_window_geometry(top)

if top.wm_state() != 'normal':
            # Can't zoom/restore window height for windows not in the 'normal'
            # state, e.g. maximized and full-screen windows.
            return None

try:
            maxheight, maxy = self.get_max_height_and_y_coord()
        except WmInfoGatheringError:
            return None

if height != maxheight:
            # Maximize the window's height.
            set_window_geometry(top, (width, maxheight, x, maxy))
            return True
        else:
            # Restore the window's height.
            #
            # .wm_geometry('') makes the window revert to the size requested
            # by the widgets it contains.
            top.wm_geometry('')
            return False

def get_max_height_and_y_coord(self):
        top = self.top

screen_dimensions = (top.winfo_screenwidth(),
                             top.winfo_screenheight())
        if screen_dimensions not in self._max_height_and_y_coords:
            orig_state = top.wm_state()

# Get window geometry info for maximized windows.
            try:
                top.wm_state('zoomed')
            except tkinter.TclError:
                # The 'zoomed' state is not supported by some esoteric WMs,
                # such as Xvfb.
                raise WmInfoGatheringError(
                    'Failed getting geometry of maximized windows, because ' +
                    'the "zoomed" window state is unavailable.')
            top.update()
            maxwidth, maxheight, maxx, maxy = get_window_geometry(top)
            if sys.platform == 'win32':
                # On Windows, the returned Y coordinate is the one before
                # maximizing, so we use 0 which is correct unless a user puts
                # their dock on the top of the screen (very rare).
                maxy = 0
            maxrooty = top.winfo_rooty()

# Get the "root y" coordinate for non-maximized windows with their
            # y coordinate set to that of maximized windows.  This is needed
            # to properly handle different title bar heights for non-maximized
            # vs. maximized windows, as seen e.g. in Windows 10.
            top.wm_state('normal')
            top.update()
            orig_geom = get_window_geometry(top)
            max_y_geom = orig_geom[:3] + (maxy,)
            set_window_geometry(top, max_y_geom)
            top.update()
            max_y_geom_rooty = top.winfo_rooty()

# Adjust the maximum window height to account for the different
            # title bar heights of non-maximized vs. maximized windows.
            maxheight += maxrooty - max_y_geom_rooty

self._max_height_and_y_coords[screen_dimensions] = maxheight, maxy

set_window_geometry(top, orig_geom)
            top.wm_state(orig_state)

return self._max_height_and_y_coords[screen_dimensions]

def get_window_geometry(top):
    geom = top.wm_geometry()
    m = re.match(r"(\d+)x(\d+)\+(-?\d+)\+(-?\d+)", geom)
    return tuple(map(int, m.groups()))

def set_window_geometry(top, geometry):
    top.wm_geometry("{:d}x{:d}+{:d}+{:d}".format(*geometry))

if __name__ == "__main__":
    from unittest import main
    main('idlelib.idle_test.test_zoomheight', verbosity=2, exit=False)

# Add htest?