Dictionary的表達式：{KEY: VALUE}

• value 可以是string, list, or disctionary. 層層嵌套，e.g 多層菜單
• Dictionary的打印結果是無序的。因為可以通過key來查找value內容，所有不用像list一樣，通過下標來查找。
• key必須是唯一的，天生去重復。

Dataset = {
    ‘Equity Fund‘: ‘Deep value‘,
    ‘Balanced Fund‘: ‘Market oriented with a growth bias‘,
    ‘Fixed Income Fund‘: [‘Government bond
 
‘,‘Financial Notes‘,‘Credit Bond‘,‘MBS‘],
}
print(Dataset)

{‘Equity Fund‘: ‘Deep value‘, ‘Balanced Fund‘: ‘Market oriented with a growth bias‘, ‘Fixed Income Fund‘: [‘Government bond‘, ‘Financial Notes‘, ‘Credit Bond‘, ‘MBS‘]}

添加

Dataset["Alternative Investment"] = ‘REITS‘  # 添加Key
print(Dataset)

{‘Equity Fund‘: ‘Deep value‘, ‘Balanced Fund‘: ‘Market oriented with a growth bias‘, ‘Fixed Income Fund‘: [‘Government bond‘, ‘Financial Notes‘, ‘Credit Bond‘, ‘MBS‘], ‘Alternative Investment‘: ‘REITS‘

修改

Dataset["Equity Fund"] = ‘Fundamental Growth‘
Dataset[‘Fixed Income Fund‘][1] = ‘MTN‘
print(Dataset)

{‘Equity Fund‘: ‘Fundamental Growth‘, ‘Balanced Fund‘: ‘Market oriented with a growth bias‘, ‘Fixed Income Fund‘: [‘Government bond‘, ‘MTN‘, ‘Credit Bond‘, ‘MBS‘], ‘Alternative Investment‘: ‘REITS‘}

刪除

del Dataset[‘Equity Fund‘]
print(Dataset)

or

Dataset.pop("Equity Fund") 
print(Dataset)

or 隨機刪除

Dataset.popitem()

查找

Python 基礎 - Day 2 Learning Note - Dictionary 字典