林稊葦LIST清單DICT字典RANDOM模組
#註解林稊葦
import random
x=[i for i in range(10)]
print('產生清單',x)
y={}
for i in x:
y[i]=random.random()
print(y)
for i in y:
print(i,y[i])
林稊葦python運算CSV輸出TKINTER投資風險與報酬Markowitz
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="繪圖 ",font=('Arial',30,'bold'), command = draw, bg='purple',fg='white').pack(side=LEFT) button2 = Button(tk, text="刪除 ...
620.https://d11117312d.blogspot.com/2025/06/60.html
回覆刪除W3school產生亂數。https://d11117312d.blogspot.com/2025/06/listdictrandom.html