class ScrollableFrame(ttk.Frame):
    def __init__(self, container, *args, **kwargs):
        super().__init__(container, *args, **kwargs)
        canvas = tk.Canvas(self)
        scrollbar = ttk.Scrollbar(self, orient="vertical", command=canvas.yview)
        self.scrollable_frame = ttk.Frame(canvas)
        self.scrollable_frame.bind(
            "<Configure>",
            lambda e: canvas.configure(
                scrollregion=canvas.bbox("all")
            )
        )
        canvas.create_window((0, 0), window=self.scrollable_frame, anchor="nw")
        canvas.configure(yscrollcommand=scrollbar.set)
        canvas.pack(side="left", fill="both", expand=True)
        scrollbar.pack(side="right", fill="y")
window = tk.Tk()
window.geometry('960x540')
window.title("Peruse for reddit")
post_frame = ScrollableFrame(window)
for i in range(50):
    ttk.Label(post_frame.scrollable_frame, text="Sample scrolling label").pack()
post_frame.pack()
window.mainloop()