How do I use dictionaries in Python?

How do I use dictionaries in Python?

Dictionaries in Python are used to store data in key-value pairs. You can create one using curly braces, like this: my_dict = {'key1': 'value1', 'key2': 'value2'}.

How can I access a value in a dictionary?

You can access a value by using its key. For example, my_dict['key1'] will return 'value1'.

What if the key doesn't exist?

If the key doesn't exist, trying to access it will raise a KeyError. You can use the get() method to avoid this, like my_dict.get('key3', 'default_value').

Can I loop through a dictionary?

Yes, you can loop through a dictionary using a for loop. For example, for key in my_dict: will iterate over the keys.