How can I use dictionaries effectively in Python?

How can I use dictionaries effectively in Python?

Dictionaries in Python are versatile! You can use them for fast lookups, storing key-value pairs, and more. What specific use case do you have in mind?

I want to know how to merge two dictionaries.

You can merge dictionaries using the update() method or the | operator in Python 3.9+. Would you like an example?

Yes, please provide an example.

Sure! Here's an example:

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}

# Using update()
dict1.update(dict2)
print(dict1)  # Output: {'a': 1, 'b': 3, 'c': 4}

# Using | operator
merged_dict = dict1 | dict2
print(merged_dict)  # Output: {'a': 1, 'b': 3, 'c': 4}

This merges dict2 into dict1, updating values for duplicate keys.

What about nested dictionaries?

Nested dictionaries are dictionaries within dictionaries. You can access them using multiple keys. Would you like to see an example?