Search on stackoverflow from console

stack_overflow_search.py

#!/usr/bin/env python3
from grab import Grab
g = Grab()

def myprint(text):
	while len(text) > 80:
		substr = text[:80]
		endofline = max(substr.rfind('\n'), substr.rfind(' '))
		if not endofline:
			endofline = 80
		print(text[:endofline])
		text = text[endofline+1:]
	print(text)

from sys import argv
from urllib.parse import quote

from re import compile
rex_colorize = compile('<a.*>')
rex_clearize = compile('<.*>')

transforms = (
	('code', '\x1B[32m'),
	('b', '\x1B[31m'),
	('p', '\n'),
	('pre', '\n'),
	)

query = 'http://www.google.ru/search?q={}%20site:stackoverflow.com'
query = query.format(quote(' '.join(argv[1:])))
#print(query)
g.go(query)
for link in g.doc.select('//h3[@class="r"]//a'):
	
	print('\x1B[33m'+link.text()+'\x1B[0m')
	link = link.attr('href')
	print('\x1B[33m'+link+'\x1B[0m')
	g.go(link)
	
	for answer in g.doc.select('//*[@class="answer"]//*[@class="post-text"]'):
		answer = answer.html()
		#answer = answer.replace('\n', ' ')
		for before, after in transforms:
			answer = answer.replace('<'+before+'>', after)
			answer = answer.replace('</'+before+'>', '\x1B[0m')
		
		answer = rex_colorize.sub('\x1B[33m', answer)
		answer = answer.replace('</a>', '\x1B[0m')
		answer = rex_clearize.sub('', answer)
		
		#while '  ' in answer:
		#	answer = answer.replace('  ', ' ')
		while '\n\n' in answer:
			answer = answer.replace('\n\n', '\n')
		answer = answer.strip()
		
		print('-'*80)
		myprint(answer)
		try:
			if input('> ') in ('next', ' '):
				break
		except (EOFError, KeyboardInterrupt):
			print('\nExit.')
			exit()

print("Sorry. It's all...")