访问嵌套字典中的值 [英] Accessing values in nested dictionary

问题描述

嵌套字典的长度为12，这是记录之一:

Nested dictionary has a length of 12, this is one of the records:

{('ALEXANDER', 'MALE'): {'2010': ('2619', None), '2011': ('2494', None), '2009': ('2905', None)}, ...

主键= ('ALEXANDER', 'MALE')

主值(它是嵌套字典)= {'2010': ('2619', None), '2011': ('2494', None), '2009': ('2905', None)}

Main value (which is nested dictionary) = {'2010': ('2619', None), '2011': ('2494', None), '2009': ('2905', None)}

嵌套字典键/值= '2010': ('2619', None) ...

Nested dictionary key/value = '2010': ('2619', None) ...

一个人如何访问年份'2010'和值'2619'?

How would one access the year '2010' and the value '2619'?

是否可以使用变量来做到这一点?

Is it possible to do this using variables?

推荐答案

这可能会为您指明正确的方向:

This may point you in the right direction:

>>> d= {('ALEXANDER', 'MALE'): {'2010': ('2619', None), '2011': ('2494', None), '2009': ('2905', None)}}
>>> for mainKey in d:
    print(mainKey)
    for key,val in d[mainKey].items():
        print(key,val[0])


('ALEXANDER', 'MALE')
2011 2494
2009 2905
2010 2619

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