What are the best practices for using dictionaries in Python?

What are the best practices for using dictionaries in Python?

Some best practices include using clear and descriptive keys, avoiding mutable types as keys, and using dictionary comprehensions for concise code.

Can you give an example of a dictionary comprehension?

Sure! Here's an example: squared_dict = {x: x**2 for x in range(5)} creates a dictionary with numbers as keys and their squares as values.

How can I handle missing keys in a dictionary?

You can use the get() method, which returns a default value if the key is not found, like this: my_dict.get('key', 'default_value').

What about merging two dictionaries?

You can use the update() method or the | operator in Python 3.9 and later to merge dictionaries.