How to merge nested dictionaries at different nested level?

Question

I would like to merge these two nested dictionaries :

dict1 = {'NYSE': {'day': {'USD': {'missing': ['z', 'y', 'x']}}}}
dict2 = {'NYSE': {'hour': {'USD': {'missing': ['z', 'y', 'x']}}}}

So the result would be something like this :

{
    'NYSE': {
        'day': {
            'USD': {
                'missing': ['z', 'y', 'x']
            }
        },
        'hour': {
            'USD': {
                'missing': ['z', 'y', 'x']
            }
        }
    }
}

In some situations I need to merge the second level of the dictionaries like this :

dict1 = {'NYSE': {'day': {'USD': {'missing': ['z', 'y', 'x']}}}}
dict3 = {'NYSE': {'day': {'EUR': {'missing': ['z', 'y', 'x']}}}}

Is there a simple way to do this ?

When I use dict1.update(dict2) it doesn't gives the expected result because dict2 becomes dict1.

I could do this but it is not flexible at all.

dict1['NYSE']['hour'] = {'USD': {'missing': ['z', 'y', 'x']}}

Thank you,

How about wrapping this data in class? – Dawid Fieluba May 30 '18 at 11:54 — Dawid Fieluba, May 30 '18 at 11:54

Gabriel Ben Compte · Accepted Answer · 2018-05-30T12:02:01.120

3

You can use:

dict1['NYSE'].update(dict2['NYSE'])

edited May 30 '18 at 12:02

answered May 30 '18 at 11:53

Gabriel Ben Compte

888
6
18

thre is a typo, it should be: dict1['NYSE'].update(dict2['NYSE']) – Juan May 30 '18 at 11:59
It's fixed. Thanks! – Gabriel Ben Compte May 30 '18 at 12:02

How to merge nested dictionaries at different nested level?

1 Answers1