How can I use defaultdict for error handling in Python?

How can I use defaultdict for error handling in Python?

You can use defaultdict from the collections module to handle missing keys gracefully. It allows you to specify a default value for non-existent keys.

Can you show me a code example?

Sure! Here's a simple example:

from collections import defaultdict

default_dict = defaultdict(int)

# Accessing a missing key
print(default_dict['missing_key'])  # Outputs: 0

What happens if I want a different default value?

You can specify a different default factory. For example, if you want a list as the default value:

from collections import defaultdict

default_dict = defaultdict(list)

# Accessing a missing key
print(default_dict['missing_key'])  # Outputs: []