w3schoois陣列截圖 w3schoois陣列程式碼 #陳映年拷貝自 201單元 """for x in 'Takming': #迴圈逐字元印出 print("字母: %s" % x)三引號框起註解 """ fruits = ['台積電', '鴻海', '聯發科'] #台灣市場價值最高的三公司 for x in fruits: # print ("公司: %s" % x) print(fruits) fruits.append("中華電") print("使用append") print(fruits) fruits.clear() print("使用clear") print(fruits) fruits = ['台積電', '鴻海', '聯發科', '中華電'] chicken = fruits.copy() #和 chicken = fruits 有何不同? print(chicken) fruits.append("中華電") print(fruits.count("中華電")) print(fruits.count("台積電")) for x in fruits: print(x) if x == "中華電": #判斷式是否banana print('I hate 中華電.') if x == "聯發科": #判斷式是否cherry print('I like cherry.') if x == "鴻海": #判斷式是否apple print('You are my sweet apple.') #體會到只要我有耐心與興趣,我也可以當一個專業的程式開發人員 Python有一套內建方法(built-in method...
w3scholls練習程式碼 #字典 key:values, 陳映年 #w3schools原來 字串:字串,改成 整數:字串 a = { #市場價值最大的五家公司 2330: "台積電", 2317: "鴻海", 2454: "連科發", 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()方法列出所有key搜尋鍵 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]) print(a.values()) #keys()方法列出所有values值 字典方法dictionaries Python has a set of built-in methods that you can use on dictionaries. Method Description clear() Removes all the elements 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() Removes the elem...
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