fun.py

#! /usr/bin/env python3
import time
import urllib.request
import json

author = 'pg'
num_posts =  0
base_url = 'https://hacker-news.firebaseio.com/v0/item/'

for itemid in range(1, 100):
    # Get item
    item_response = urllib.request.urlopen(base_url + str(itemid) + '.json')
    response_string = item_response.readall().decode('utf-8')
    item = json.loads(response_string)
    
    # Increment number of posts by author if they wrote this post
    if item['by'] == author:
        num_posts += 1
        
    # No one likes to be rate limited
    time.sleep(1)

print('Posts by {:s}: {:d}'.format(author, num_posts))