給嵌套的字典添加值

最近學習人工智能入門，鞏固一下 python

順便做個筆記

練習：向嵌套字典中添加值

請自己嘗試處理嵌套字典。向 elements 字典中的每個字典添加另一個條目 'is_noble_gas。插入新條目後，你應該能夠執行以下查詢：

>>> print(elements['hydrogen']['is_noble_gas'])
False
>>> print(elements['helium']['is_noble_gas'])
True

 

elements = {'hydrogen': {'number': 1, 'weight': 1.00794, 'symbol': 'H'},
            'helium': {'number': 2, 'weight': 4.002602, 'symbol': 'He'}}

# todo: Add an 'is_noble_gas' entry to the hydrogen and helium dictionaries
# hint: helium is a noble gas, hydrogen isn't

elements['hydrogen']['is_noble_gas'] = False
elements['helium']['is_noble_gas'] = True

print(elements['hydrogen']['is_noble_gas'])
print(elements['helium']['is_noble_gas'])