python-scripts/08_basic_email_web_crawler.py at master · imranity/python-scripts

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import requests

import re

try:

from urllib.parse import urljoin

except ImportError:

from urlparse import urljoin

# regex

email_re = re.compile(r'([\w\.,]+@[\w\.,]+\.\w+)')

link_re = re.compile(r'href="(.*?)"')

def crawl(url):

result = set()

req = requests.get(url)

# Check if successful

if(req.status_code != 200):

return []

# Find links

links = link_re.findall(req.text)

print("\nFound {} links".format(len(links)))

# Search links for emails

for link in links:

# Get an absolute URL for a link

link = urljoin(url, link)

# Find all emails on current page

result.update(email_re.findall(req.text))

return result

if __name__ == '__main__':

emails = crawl('http://www.realpython.com')

print("\nScrapped e-mail addresses:")

for email in emails:

print(email)

print("\n")