from tkinter import * #或者import tkinter as tk import math#輸入數學MATH函式庫 tk = Tk() #建構視窗名為tk tk.geometry('1200x400')#視窗 寬1200像素 tk.title("許媁雯python tkinter三角函數if_else判斷") canvas = Canvas(tk, width=1200, height=400, bg='PINK') canvas.grid(row=0,column=0,padx=5,pady=5,columnspan=3) delay=1 # milliseconds, 1/1000秒 x1,y1,z1=0,200,10#python特徵,多變數=對等值 h=190 #上下範圍,相當於數學1到-1 def LH(): global x1, y1, z1, inc #global全球,local當地 if (x1 == 0): inc = 1 canvas.delete("a11") elif (x1 == 1200): inc = -1 canvas.delete("a11") x2 = x1 + inc #換到下個+1 y2=200 - h*math.sin(0.02*x2) z2=200 - h*math.cos(0.02*x2) L1=canvas.create_line(x1,y1,x2,y2,fill='BLUE',width=10) L2=canvas.create_line(x1,z1,x2,z2,fill='yellow',width=10) x1,y1,z1=x2,y2,z2 canvas.after(delay,LH) LH() #執行LauHou老猴 tk.mainloop() 財金程式設計616圖形改成由右而左 財金程式設計617條件判斷,繳交作業