differentiate between two values with same key in a nested dictionary [closed]

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I have a nested dictionary in Python with the following structure:

d= {
 'name': 'test',
 'IBM': 146.48,
 'MSFT': 44.11,
 'CSCO': 25.54,
 'micro': {'name': 'test', 'age': 1}
}

In my code I want to change the value of the first key name. When I do:

for k, v in d.items():
    d[k] = newvalue

All the values of keys = name change to my new value. But I want to only change the value of the first key name.

How to fix this?

来源：https://stackoverflow.com/questions/65994092/differentiate-between-two-values-with-same-key-in-a-nested-dictionary