How to create a Gtk.Range element using pygtk?

Question

Python

How to create and place this element correctly?

...
        self.RangeStep = Gtk.Range()
        self.RangeStep.set_range(1.0, 255.0)
        self.QueryBox.pack_start(self.RangeStep, False, False, 0)
        ...

What I get:

Traceback (most recent call last):
  File "/home/Tihon/Projects/PycharmProjects/Project/hash.py", line 8, in <module>
    Main = _gui.MainWindow()
  File "/home/Tihon/Projects/PycharmProjects/Project/_gui.py", line 75, in __init__
    self.RangeStep = Gtk.Range()
TypeError: cannot create instance of abstract (non-instantiable) type `GtkRange'

This and this manual unfortunately without examples. How to declare it? Please help with examples.