What is the difference between a priority queue and heapq in Python?

What is the difference between a priority queue and heapq in Python?

A priority queue is an abstract data type where each element has a priority. The heapq module in Python implements a priority queue using a binary heap.

Can you explain how heapq works in Python?

Sure! The heapq module provides an implementation of the min-heap algorithm, allowing you to efficiently retrieve the smallest element.

Are there any performance differences between using a priority queue and heapq?

Yes, heapq is generally more efficient for implementing a priority queue, as it provides O(log n) time complexity for insertions and deletions.

Can I use heapq for a max-heap instead?

Yes, you can simulate a max-heap by inserting negative values into the min-heap provided by heapq.