import tkinter as tk

def move(delta_x):
    canvas.move(id_moveable, delta_x, 0)

window = tk.Tk()
window.geometry("400x400")
window.title("2021a")
window.resizable(False, False)

canvas = tk.Canvas(window, width=400, height=300, bg='yellow')
canvas.pack()
id_moveable = canvas.create_oval(50, 10, 10, 50)
canvas.create_rectangle(50, 10, 10, 50)

control_frame = tk.Frame(window)
control_frame.place(x=0, y=300, width=400, height=100)
button_left = tk.Button(control_frame, text="Left",
                        command=lambda: move(-10))
button_left.pack(side=tk.LEFT)
button_right = tk.Button(control_frame, text="Right",
                        command=lambda: move(10))
button_right.pack(side=tk.RIGHT)
window.bind('<Left>', lambda event: move(-10))
window.bind('<Right>', lambda event: move(10))
window.bind('<a>', lambda event: move(-10))
window.bind('<d>', lambda event: move(10))

window.mainloop()