三個Javascript函數sin,cos與canvas.font

Javascript在網頁就可以執行不需要開啟Spyder

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楊侑宸python運算CSV輸出TKINTER投資風險與報酬Markowaitz

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關鍵程式碼 def draw():#按下按鈕button1執行draw canvas.create_line(0,500,700,500,width=3,fill='black',arrow='last') canvas.create_line(10,600,10,5,width=3,fill='black',arrow='last') for firm in firms: t=(firm, year.get()) x = 10+20*stdev[t]*2*3**0.5 #放大20 y = 500 - 10*mean[t]*12 #放大10 dot=canvas.create_oval(x-5,y-5,x+5,y+5,fill='blue') lab=canvas.create_text(x+10,y,text=firm[4:7],anchor=W,font=('微軟中黑體', 16)) def delete():#按下按鈕button2執行delete canvas.delete('all') years=[x for x in range(2007, 2025)] year=IntVar(tk) year.set(years[0]) label = Label(tk, text="年度",font=('Arial',30,'bold'),).pack(side=LEFT) #距離左側 option1 = OptionMenu(tk, year, *years).pack(side=LEFT) button1 = Button(tk, text="賴青德繪圖 ",font=('Arial',30,'bold'), command = draw, bg='black',fg='white').pack(side=LEFT) button2 = Button(tk, text="賴青德刪...
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程式碼註解

Python 函數def 函數名稱: def draw(): canvas繪圖套件 create_line(x起點,y起點,x終點,y終點) def draw第二個delete def draw():#按下按鈕button1執行draw canvas.create_line(0,500,700,500,width=3,fill='black',arrow='last') canvas.create_line(10,600,10,5,width=3,fill='black',arrow='last') for firm in firms: t=(firm, year.get()) x = 10+20*stdev[t]*2*3**0.5 #放大20 y = 500 - 10*mean[t]*12 #放大10 dot=canvas.create_oval(x-5,y-5,x+5,y+5,fill='blue') lab=canvas.create_text(x+10,y,text=firm[4:7],anchor=W,font=('微軟中黑體', 16)) def delete():#按下按鈕button2執行delete canvas.delete('all') years=[x for x in range(2007, 2025)] year=IntVar(tk) year.set(years[0]) label = Label(tk, text="年度",font=('Arial',30,'bold'),).pack(side=LEFT) #距離左側 option1 = OptionMenu(tk, year, *years).pack(side=LEFT) button1 = Button(tk, text="賴青德繪圖 ",font=('Arial',30,'bold'), command = draw, bg='black...
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楊侑宸Javascript與Python數值方法

PYTHON計算現值PRESENT VALUE程式碼 def computePV(): #python def函數: {} r = float(input('輸入利率: '))#float轉為實數 n = float(input('輸入期數: ')) m = float(input('輸入每期金額: ')) f = float(input('輸入終值: ')) pvif = 1/(1+r)**n pv = (1-pvif)*m/r + f * pvif print('現值等於 ',pv) #前面我們用Javascript這裡python #function: def #{區段} 同一個縮排indent同一個區段 computePV() 我會使用上面的PYTHON也會使用下面的JAVASCRIPT 月利率y(rate) 期數n(nper) 每月還款金額(pmt) 終值f(fv) 參考劉任昌金融市場講義https://drive.google.com/file/d/17z6UZgN5fC2XCO1L8_BQs57dgQXzbwou/view?usp=sharing 楊侑宸學習HTML+CSS+JavaScript程式碼
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