黃冠霖.HTML.CSS.JavaScript.Java

w3schools練習截圖 w3schools程式碼 #黃冠霖 集合{},字典{key:value,},元組(),清單] s= {"台積電", "鴻海", "聯發科"} t= ("台積電", "鴻海", "聯發科") list= ["台積電", "鴻海", "聯發科"] d= {2330:"台積電",2317:"鴻海",2454:"聯發科"} print("型態" + str(type(s)) + str(s)) print("型態" + str(type(t)) + str(t)) print("型態" + str(type(d)) + str(d)) print("型態" + str(type(list)) + str(list)) #字串與字串才能+所以要用str轉成字串 i = 0 for a in list: i = i+1 print("台灣第" + str(i) + "大的公司是") print(" " + a) '''大區域註解用三個引號set集合沒有順序unordered, 練習使用迴圈輸出集合內的內容''' w3schools集合方法 Python has a set of built-in methods that you can use on sets. Method Description add() Adds an element to the set clear() Removes all the elements from the set copy() Returns a copy of the set difference() Returns a set containing the difference between two or more sets difference_u...

w3schools截圖 程式碼 a = { #台灣股票市場價值最大,黃冠霖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 ele...

w3schools練習SVG w3schools練習CANVAS 心得 <svg>svg程式碼</svg> <canvas>canvas程式碼</canvas> <script>網頁JavaScript程式碼</script> ol是order list順序清單, gt大於, lt小於前面加上&控制 canvas帆布 ol=office lady, 這裡是 ordered list順序的清單 標楷體命令「font-family: DFKai-sb」 幕前排版系統word,編輯網頁的撰寫模式，幕後排版系統控制你的命令 教學影片 維基百科Canvas element 維基百科SVG Sorry, your browser does not support inline SVG.

w3schools 程式碼 #黃冠霖strings可以用單引雙引只要對稱 b = '狗吃屎,兔吃菜,貓抓鼠' # 0 1 23 4 5 678 9 10,11,12, print('字串長度' + str(len(b))) #len函數 字串長度 輸出 整數 #str函數 轉成字串 這樣才能串接 print(b[-5:-2]) #練習字串格式format quantity = "精華下午茶" itemno = 5 price = "黃冠霖" myorder = "我要吃 {} 吃幾個 {}，和 {} 誰一起吃" print(myorder.format(quantity, itemno, price)) 字串的方法與函數w3schools https://www.w3schools.com/python/python_strings_methods.asp Method Description capitalize() Converts the first character to upper case casefold() Converts string into lower case center() Returns a centered string count() Returns the number of times a specified value occurs in a string encode() Returns an encoded version of the string endswith() Returns true if the string ends with the specified value expandtabs() Sets the tab size of the string find() Searches the string for a specified value and returns the position of where it was found format() Formats specified values in a string format_map() Formats spec...