How do I nest dictionaries in Python?

How do I nest dictionaries in Python?

You can nest dictionaries in Python by defining a dictionary within another dictionary. For example:

nested_dict = {'key1': {'subkey1': 'value1', 'subkey2': 'value2'}, 'key2': 'value3'}

Can you show me how to access a nested value?

Sure! To access a nested value, you can use the keys in sequence. For example:

value = nested_dict['key1']['subkey1']  # This will give you 'value1'

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

You can add a new key-value pair by specifying the keys. For example:

nested_dict['key1']['subkey3'] = 'value4'

Is there a way to loop through all the keys and values?

Yes! You can use a loop to iterate through the dictionary. Here's an example:

for key, value in nested_dict.items():
    print(key, value)