Ошибка при импорте модулей

from tkinter import *
import numpy as np
import random
 
canvas_width = 700
canvas_height = 500
brush_size = 3
color = "black"
 
def create_point():
    chislo = message.get()
    n = int(chislo) - 1
    x1 = random.randrange(start=1, stop=700)
    y1 = random.randrange(start=1, stop=500)
    for i in range(n):
        x2 = random.randrange(start=1, stop=700)
        y2 = random.randrange(start=1, stop=500)
        w.create_line(x1, y1, x2, y2, fill=color)
        x1 = x2
        y1 = y2
 
root = Tk()
root.title("Точки-ломаная-сгладить")
 
message = StringVar()
 
message_entry = Entry(textvariable=message)
 
w = Canvas(root, width=canvas_width, height=canvas_height, bg="white")
w.bind("<B1-Motion>")
 
create_btn = Button(text="Соединить точки", width=14, command=lambda: create_point())
b_btn = Button(text="Сгладить ломаную", width=15, command=lambda: color_change("yellow"))
clear_btn = Button(text="Очистить", width=10, command=lambda: w.delete("all"))
 
w.grid(row=2, column=0, columnspan=7, padx=5, pady=5, sticky=E+W+S+N)
w.columnconfigure(6, weight=1)
w.rowconfigure(2, weight=1)
 
message_entry.grid(row=0, column=2)
create_btn.grid(row=0, column=3)
b_btn.grid(row=0, column=4)
clear_btn.grid(row=0, column=5, sticky=W)
 
root.mainloop()