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1. 使用縮進方式做為程式塊開始結束的標示，程式換行在行末尾加 "\"
2. 元祖(Tuple)數據類型，和List的不同是Tuple不能修改，優點是執行速度比List快，因為不能修改也就比較安全，團隊開發某些情況會用到。
3. Dict字典類型，若鍵有重複時，後面的建值會覆蓋掉前面的。
dict = {"banana": 20, "apple": 30, "orange": 40, "banana": 30}
print(dict["banana"]) #30
字典類型的排列順序是隨機的，與設定的順序不一定相同，所以在讀取時就不能使用index。
dict = {"banana":20, "apple": 30}
result = dict.items() # 取得以[鍵:值]為組合的Array
# [("banana":20), ("apple":30)]
result = dict.setdefault("apple", 50) # 30
result = dict.setdefault("orange", 80) # create new
fruits = ["apple", "mango", "orange"] #list numbers = (1, 2, 3) #tuple alphabets = {'a':'apple', 'b':'ball', 'c':'cat'} #dictionary vowels = {'a', 'e', 'i' , 'o', 'u'} #set
4. python3 內建了SQLite, 非常方便储存數據，不需要再額外設定database環境
5. pyhon class 的 structure function.
class Person: def __init__(self, name, age): self.name = name self.age = age def myfunc(self): print("Hello my name is " + self.name) p1 = Person("John", 36) p1.myfunc() # the function called __init__(), which is always executed when the class is being initiated. # Use the __init__() function to assign values to object properties, or other operations that are necessary to do when the object is being created # The self parameter is a reference to the current instance of the class, and is used to access variables that belongs to the class. # It does not have to be named self , you can call it whatever you like, but it has to be the first parameter of any function in the class
6. string join
sentence = ['this','is','a','sentence'] '-'.join(sentence) # this-is-a-sentence
7. function as function argument
def Calculate(func, *args): print(func(*args)) def Add(arg1, arg2): return arg1 + arg2 def Sub(arg1, arg2): return arg1 - arg2 Calculate(Add, 1, 3) # 4 Calculate(Sub, 1, 3) # -1
另外還有一種 keyword argument的用法，Calulate(func, **keywordArgs)
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