def __init__(self, title: str):

Gtk.Window.__init__(self, title=title)

self.set_size_request(150, 100)

self.set_resizable(False)

label = Gtk.Label('Please, enter your credentials in order'

"\n"

'to authorize in the application.')

def new_sep():

sep = Gtk.Separator()

sep.set_margin_top(5)

sep.set_margin_bottom(5)

return sep

form = Gtk.VBox(spacing=6)

form.set_border_width(10)

form.set_hexpand(True)

self.email = Gtk.Entry()

self.password = Gtk.Entry()

self.password.set_visibility(False)

submit_button = Gtk.Button(label="Enter")

submit_button.connect("clicked", self.on_submit_button_clicked)

form.pack_start(label, True, False, 0)

form.pack_start(new_sep(), True, False, 0)

form.pack_start(Gtk.Label('E-Mail'), True, False, 0)

form.pack_start(self.email, True, False, 0)

form.pack_start(Gtk.Label('Password'), True, False, 0)

form.pack_start(self.password, True, False, 0)

form.pack_start(new_sep(), True, False, 0)

form.pack_end(submit_button, True, False, 0)

self.add(form)

def on_submit_button_clicked(self, widget):

email = self.email.get_text()

password = self.password.get_text()

print('Email:', email)

print('Password:', password)

if '@' not in email:

show_msgbox(self, 'You entered an incorrect e-mail')

else:

# authorize

self.destroy()

def __del__(self):