Simple python script to download Project Euler problems into a new directory. Requires BeautifulSoup4, which can be installed using pip install beautifulsoup4

euler.py

import sys, os, re
import urllib2
from bs4 import BeautifulSoup

euler_url = 'http://projecteuler.net/problem='

def main():
    for problem_number in sys.argv[1:]:
        page = urllib2.urlopen(euler_url + problem_number)
        html = page.read()
        soup = BeautifulSoup(html)
        
        # scrape the problem title
        title = soup.find(id='content').h2.get_text()
        
        # scrape problem statement
        content = soup.find(id='content').find(attrs={'class': re.compile(r".*\bproblem_content\b.*")})
        
        # directory structure is:
        # [problem_number]_[title]
        #   solution.py
        #   problem.html
        
        dir_name = problem_number + "_" + title.strip().lower().replace(' ', '_')
        
        # make problem directory if not exists
        if not os.path.exists(dir_name):
            os.makedirs(dir_name)
          
        # create the problem statement file  
        with open(os.path.join(dir_name, 'problem.html')) as problem_file:
            problem_file.write(content)
        
        # create the solution script with scaffolding
        with open(os.path.join(dir_name, 'solution.py')) as solution_file:
            # write the python script scaffolding here

if __name__ == "__main__":
    main()