How can I filter a dictionary in Python?

How can I filter a dictionary in Python?

You can use dictionary comprehensions to filter a dictionary. For example:

my_dict = {'a': 1, 'b': 2, 'c': 3}
filtered_dict = {k: v for k, v in my_dict.items() if v > 1}

This will give you a new dictionary with only the items where the value is greater than 1.

Can you explain how that works?

Sure! The dictionary comprehension iterates over each key-value pair in my_dict. The condition if v > 1 checks if the value meets the criteria, and if it does, that key-value pair is included in filtered_dict.

What if I want to filter based on the key instead?

You can modify the condition in the comprehension. For example, to filter keys that start with 'a':

filtered_dict = {k: v for k, v in my_dict.items() if k.startswith('a')}

Thanks! Can I filter using multiple conditions?

Yes, you can combine conditions using logical operators. For example:

filtered_dict = {k: v for k, v in my_dict.items() if v > 1 and k != 'b'}