Python Brain Teasers

Puzzle 4

A Task to Do

tasks.py

from heapq import heappush, heappop

tasks = []
heappush(tasks, (30, 'work out'))
heappush(tasks, (10, 'wake up'))
heappush(tasks, (20, 0xCAFFE))
heappush(tasks, (20, 'feed cat'))
heappush(tasks, (40, 'write book'))

while tasks:
    _, payload = heappop(tasks)  
    print(payload)

Guess the Output
	Try to guess what the output is before moving to the next page.

This code will raise a TypeError exception.

The built-in heapq module implements min-heap over lists.

It’s common to ...