Quick Answer

Order dictionaries by key values.

Understanding the Issue

To sort dictionaries by specific keys, use the sorted() function with a key parameter or the operator module.

The Problem

This code demonstrates the issue:

Python Error 
users = [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}]
# Need sorted by age

The Solution

Here's the corrected code:

Python Fixed 
# Solution 1: Lambda function
sorted_users = sorted(users, key=lambda x: x["age"])

# Solution 2: operator.itemgetter
from operator import itemgetter
sorted_users = sorted(users, key=itemgetter("age"))

# Solution 3: Multiple sort keys
sorted_users = sorted(users, key=lambda x: (x["age"], x["name"]))

# Solution 4: Reverse sort
sorted_users = sorted(users, key=itemgetter("age"), reverse=True)

Key Takeaways

Use itemgetter for better performance with multiple keys.