莊俊祥程式設計HTML.CSS.JavaScript.Java

W3Schools截圖 W3Schools程式碼 #莊俊祥 集合{},清單[],元組(),字典{key:value} s = {"台積電", "鴻海", "聯發科", "中華電", "台塑化"} t = ("台積電", "鴻海", "聯發科", "中華電", "台塑化") list = ["台積電", "鴻海", "聯發科"] d = {2330:"台積電", 2317:"鴻海", 2454:"聯發科"} print("s型態" + str(type(s))) print("t型態" + str(type(t))) print("d型態" + str(type(d))) print("t型態" + str(type(list))) #字串與字串+ i = 0 for a in t: i = i + 1 print("台灣市場價格第" + str(i) + "大公司是") print(" " + a) print("聯發科的位置" + str(t.index("聯發科"))) '''python大區塊的註解，前後用三個引號 str 轉成字串 int 轉成數字 ''' w3schools元組tuples的方法 Python has two built-in methods that you can use on tuples. Method Description count() Returns the number of times a specified value occurs in a tuple index() Searches the tuple for a speci...

w3schols截圖 w3schols練習程式碼 a = { #台灣股票市場價值最大,莊俊祥python 2330: "台積電", 2317: "鴻海", 2454: "聯發科", 2412: "中華電", 6505: "台塑化" } print(a) print(a[6505]) print(a.get(2330))#功能同 a[2330] print(a.keys()) #keys()方法列出key搜尋鍵 print(a.values()) #keys()方法列出values值 b = a.copy() print("列出b " + str(b)) print(b[2317]) print(b.clear()) a.update({2308: "台達電"}) print(a.values()) print("用迴圈列出字典a的所有值") for t in a: print(a[t]) w3schols字典用法 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 setd...