Python-EFL is a wrapper around the Enlightenment GUI kit. This series of tutorials is an update from the original author.

'''
Abdur-Ramaan Janhangeer
Updated from Jeff Hoogland's tutos
for Python3.9 and Python-elf 1.25.0

https://www.toolbox.com/tech/operating-systems/blogs/py-efl-tutorial-3-align-hints-041415/
'''

import efl.elementary as elm
from efl.elementary.box import Box
from efl.elementary.button import Button
from efl.elementary.window import StandardWindow
from efl.evas import EVAS_HINT_EXPAND
from efl.evas import EVAS_HINT_FILL

EXPAND_BOTH = EVAS_HINT_EXPAND, EVAS_HINT_EXPAND
FILL_BOTH = EVAS_HINT_FILL, EVAS_HINT_FILL


class MainWindow(StandardWindow):
    def __init__(self):
        StandardWindow.__init__(self, "ex3", "Weight Example", size=(300, 400))
        self.callback_delete_request_add(lambda o: elm.exit())

        our_button = Button(self)
        our_button.size_hint_weight = (0, 0)
        our_button.size_hint_align = FILL_BOTH
        our_button.text = "Button 1"
        our_button.show()

        our_button2 = Button(self)
        our_button2.size_hint_weight = EXPAND_BOTH
        our_button2.size_hint_align = FILL_BOTH
        our_button2.text = "Button 2"
        our_button2.show()

        our_button3 = Button(self)
        our_button3.size_hint_weight = (0, 0.5)
        our_button3.size_hint_align = FILL_BOTH
        our_button3.text = "Button 3"
        our_button3.show()

        our_box = Box(self)
        our_box.size_hint_weight = EXPAND_BOTH
        our_box.pack_end(our_button)
        our_box.pack_end(our_button2)
        our_box.pack_end(our_button3)
        our_box.show()

        self.resize_object_add(our_box)


if __name__ == "__main__":
    elm.init()
    gui = MainWindow()
    gui.show()
    elm.run()

2nd version

import efl.elementary as elm
from efl.elementary.box import Box
from efl.elementary.button import Button
from efl.elementary.window import StandardWindow
from efl.evas import EVAS_HINT_EXPAND
from efl.evas import EVAS_HINT_FILL

EXPAND_BOTH = EVAS_HINT_EXPAND, EVAS_HINT_EXPAND
FILL_BOTH = EVAS_HINT_FILL, EVAS_HINT_FILL


class MainWindow(StandardWindow):
    def __init__(self):
        StandardWindow.__init__(self, "ex4", "Align Example", size=(300, 200))
        self.callback_delete_request_add(lambda o: elm.exit())

        our_button = Button(self)
        our_button.size_hint_weight = EXPAND_BOTH
        our_button.size_hint_align = (0, 0)
        # our_button.size_hint_align = (EVAS_HINT_FILL, 0)
        our_button.text = "Button 1"

        our_button.show()
        our_button2 = Button(self)
        our_button2.size_hint_weight = EXPAND_BOTH
        our_button2.size_hint_align = FILL_BOTH
        our_button2.text = "Button 2"
        our_button2.show()

        our_button3 = Button(self)
        our_button3.size_hint_weight = EXPAND_BOTH
        our_button3.size_hint_align = (1, 1)
        our_button3.text = "Button 3"
        our_button3.show()

        our_box = Box(self)
        our_box.size_hint_weight = EXPAND_BOTH
        our_box.pack_end(our_button)
        our_box.pack_end(our_button2)
        our_box.pack_end(our_button3)
        our_box.show()

        self.resize_object_add(our_box)


if __name__ == "__main__":
    elm.init()
    gui = MainWindow()
    gui.show()
    elm.run()