python - 解析字典的字典时，是否有通配符选项可用于访问嵌套字典？

Question

我有这个数据:

 {'6': {'Change': '109,438',
  'Name': 'Prologis Inc',
  'Owned': '609,826',
  'Weight': ' 2.14'},
 '7': {'Change': '48,032',
  'Name': 'The Home Depot Inc',
  'Owned': '208,967',
  'Weight': ' 2.02'},
 '8': {'Change': '61,235',
  'Name': 'Facebook Inc A',
  'Owned': '220,558',
  'Weight': ' 2.01'},
 '9': {'Change': '32,045',
  'Name': 'NextEra Energy Inc',
  'Owned': '205,412',
  'Weight': ' 1.98'}}

这是一个字典中的一个字典，我想提取“姓名”和“体重”。我正在努力通过第一层(带有数字的那一层)，所以这段代码不起作用:

mylist = []
stocks = holdings[0]
for s in stocks:
    m = (s['Name'], s['Weight'])
    mylist.append(m)

Answer 1

您想遍历 stocks.values() 以获取值而不是键:

>>> [(s['Name'], s['Weight']) for s in stocks.values()]
[('Prologis Inc', ' 2.14'), ('The Home Depot Inc', ' 2.02'), ('Facebook Inc A', ' 2.01'), ('NextEra Energy Inc', ' 1.98')]