江紫恩.HTML.CSS.Javascript.Java

w3schools截圖 w3schools程式碼 #江紫恩 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_upd...

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 ele...

w3schools 程式碼 樣式style #江紫恩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 = "滿漢大餐" itemno = 5 price = "江紫恩" 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