How can I modify nested collections in Python?

How can I modify nested collections in Python?

You can modify nested collections like lists and dictionaries by accessing their elements using indices or keys. What specific modification do you have in mind?

I want to change a value in a nested dictionary.

You can do that by accessing the dictionary with the appropriate keys. For example, if you have data = {'a': {'b': 1}}, you can change the value like this: data['a']['b'] = 2.

What if I want to add a new key-value pair to a nested dictionary?

You can add a new key-value pair by simply assigning a value to a new key. For example: data['a']['c'] = 3 will add a new key 'c' with the value 3.

Can you show me how to modify a list inside a nested dictionary?

Sure! If you have a dictionary like data = {'a': {'b': [1, 2, 3]}}, you can modify the list by accessing it: data['a']['b'][0] = 10 will change the first element to 10.