How can I modify values in a nested dictionary in Python?

How can I modify values in a nested dictionary in Python?

You can modify values in a nested dictionary by accessing the keys directly. For example, if you have my_dict = {'a': {'b': 1}}, you can change the value of 'b' like this: my_dict['a']['b'] = 2.

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

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

Can I loop through the nested dictionary to modify values?

Yes, you can use a loop to iterate through the nested dictionary. For example, you can use a for loop to access and modify each value.

Could you show me an example of looping through a nested dictionary?

Sure! Here's an example:

for key, value in my_dict.items():
    if isinstance(value, dict):
        for sub_key in value:
            value[sub_key] += 1  # Modify the value as needed