俞品安python自訂函數excel PV和繪圖
python tkinter create_line def pv(r,n,m,f):#俞品安函數參數r,n,m,f p = m/r*(1 - 1/(1+r)**n)+f/(1+r)**n return p#執行函數的結果傳回去 n=float(input('期數: '))#要計算轉為實數real nubers m=float(input('收付: '))#浮點點float f=float(input('終值: ')) for i in range(1,10):#迴圈 r = i*0.01 x=pv(r,n,m,f) print('利率 ', r ,'價格 ', x) import tkinter as tk#輸入tkinter繪圖 root = tk.Tk() root.title('俞品安python tkinter') root.geometry('600x300')#寬度width改成600 canvas = tk.Canvas(root, width=600, height=300) # 加入 Canvas 畫布 canvas.pack() x, y = 0, 0 canvas.create_line(0, 200, 500, 200, width=3,fill='black') for x in range(1, 200): x1 = x+1 y1 = 200 - pv(x1,n,m,f)*200 canvas.create_line(x, y, x1, y1, width=5,fill='blue') canvas.pack() x = x1 y = y1 root.mainloop() SPYDER執行結果
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