如何更改嵌套字典的键

Question

How can I change the key of one nested dictionary?

For example, how can I change data1 's "yes" into "no" below:

dc = {'data1': {'yes': 'abc'}, 'data2': {'yes': 'xyz'}}
# CODES to get the result below:
dc = {'data1': {'no': 'abc'}, 'data2': {'yes': 'xyz'}}

dc[data1] = 'no'  # won't work.

Any help will be appreciated!

Answer 1

To change a single dictionary just reference the dictionary you want to change.

>>> d = {'data1': {'yes': 'abc'}, 'data2': {'yes': 'xyz'}}
>>> d['data1']['no'] = d['data1'].pop('yes')
>>> d
{'data2': {'yes': 'xyz'}, 'data1': {'no': 'abc'}}

And if you want to change yes entries across all the dicts you have to a loop over dict.values .

>>> d = {'data1': {'yes': 'abc'}, 'data2': {'yes': 'xyz'}}
>>> for nested_d in d.values():
...     nested_d['no'] = nested_d.pop('yes')
...
>>> d
{'data1': {'no': 'abc'}, 'data2': {'no': 'xyz'}}