葉可棠python字典

h1{background-color: green; opacity: 0.3; color: blue; padding: 20px;} pre{border: solid 3px red;}

w3schools截圖

程式碼

a =	{ #台灣股票市場價值最大,劉任昌python
  2330: "台積電",
  2317: "鴻海",
  2454: "聯發科",
  2412: '中華電'}
print(a)
print("用迴圈印出所有值")
for t in a:
   print(a[t] +" 用get()方法 " + a.get(t))
a.update({1108:"幸福"})
print(a)
a.popitem()
print(a)
a.update({6505:"台塑化"})
a.update({2308:"台達電"})
print(a.keys())
print("練習values方法")
print(a.values())
print("練習items方法")
print(a.items())

w3schools字典方法

確保在</h1>之後貼上才先在html模式放一個標記a
Python has a set of built-in methods that you can use on dictionaries.
Method
方法		Description說明
clear()移除字典的Removes all the elements項目(items) from the dictionary
copy()Returns a copy of the dictionary
fromkeys()Returns a dictionary with the specified keys and value
get()Returns the value of the specified key
items()Returns a list containing a tuple for each key value pair
keys()Returns a list containing the dictionary's keys
pop()移除某個項目Removes the element with the specified key
popitem()移除最後一個Removes the last inserted key-value pair
setdefault()Returns the value of the specified key. If the key does not exist: insert the key, with the specified value
update()加入新項目Updates the dictionary with the specified key-value pairs
values()Returns a list of all the values in the dictionary

219教學影片

220教學影片

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葉可棠期中考VS Code編輯Python

圖片
from tkinter import * #從函式庫 tkinter 輸入所有 * 方法 from math import * #從函式庫 math 輸入所有 * 方法 t = (3,4,5,6,7,8,9,10,11,12,16,20,32) #宣告一元組tuple(...) tk = Tk() tk.title("劉任昌圖形使用者介面GUI=Graphical Unser Interface") canvas = Canvas(tk, width=500, height=500) canvas.pack() def show(event): #定義由事件event(按鈕選單)呼叫的函數show cx, cy, cr = 210, 210, 200 #宣告圓中心座標cx, cy半徑cr x, y =[],[] #宣告二陣列[...] k = s.get() #取得 ge t按鈕選單的選擇變數 u = 2 * pi / k #使用模組 math 圓周率 pi for i in range(k): x.append(cx + cr*cos(i*u)) #加入陣列的元素 y.append(cy + cr*sin(i*u)) #使用模組 math 三角函數cos, sin for i in range(k-1): canvas.create_line(x[i], y[i], x[i+1], y[i+1]) canvas.create_line(x[k-1], y[k-1], x[0], y[0]) #可考慮增加width寬度,fill顏色 def diagonal(): cx, cy, cr = 210, 210, 200 #宣告圓中心座標cx, cy半徑cr外來學繼承 inheritance x, y =[],[] #宣告二陣列[......
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