How to create bar graph by matplotlib

matplotlib_bar graph.py

import ctypes
import tkinter
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk


if __name__ == "__main__":
    ctypes.windll.shcore.SetProcessDpiAwareness(1)
    root = tkinter.Tk()
    
    #graph data
    x = np.arange(5)
    y = [1, 5, 2, 9, 10]

    #create graph objects
    fig, ax = plt.subplots(ncols=2)
    ax[0].bar(x, y)     #vertical
    ax[1].barh(x, y)    #horizontal
    
    #set title
    fig.suptitle("bar graph")
    ax[0].set_title("vertical")
    ax[1].set_title("horizontal")

    plt.tight_layout()

    #set graph to tkinter window
    canvas = FigureCanvasTkAgg(fig, root)
    toolbar = NavigationToolbar2Tk(canvas, root)
    canvas.get_tk_widget().pack()           #show graph
    plt.close()

    root.mainloop()