python 有一個特別的功能是字典(dictionary)，其中鍵值對應數值且具唯一性

• 宣告方式

dic = {'key': 1, 'b': 2, 'b': '3'}

• 呼叫 

a = dic['b']

a = 2 #兩者意義相同

參考:

dic = { "A": 10, "J": 18, "S": 26,
        "B": 11, "K": 19, "T": 27,
        "C": 12, "L": 20, "U": 28,
        "D": 13, "M": 21, "V": 29,
        "E": 14, "N": 22, "W": 32,
        "F": 15, "O": 35, "X": 30,
        "G": 16, "P": 23, "Y": 31,
        "H": 17, "Q": 24, "Z": 33,
        "I": 34, "R": 25
}