cambridge.py

from bs4 import BeautifulSoup as bs
import requests, sys, re
from termcolor import colored

if len(sys.argv) < 2:
    print colored("Falta o argumento palavra: Tente 'python main.py palavra'", 'red')
    exit()
elif len(sys.argv) > 2:
    print colored("O programa so toma apenas um argumento, o primeiro argumento sera utilizado.", 'red')

page  = requests.get("http://dictionary.cambridge.org/us/dictionary/english/" + sys.argv[1])
soup = bs(page.text, "html.parser")

key = 0
for options in soup.find_all("div", { "class" : "di-head" }):
    print str(key) + ' - ' + re.sub(r'[\ \n]{2,}', '', options.h2.text)
    key += 1

opc = input("Escolha uma opcao:")
if opc > key - 1:
    print colored("Opcao invalida.", 'red')
    exit()

key_2 = 0
for forms in soup.find_all("div", {"class":"di-body"}):
    if key_2 == opc:
        for mode in forms.find_all("div", {"class":"sense-block"}):
            print colored('\n' + re.sub(r'[\ \n]{2,}', '', mode.h4.text), 'green')
            for text in mode.find_all('div', {'class':'def-block pad-indent'}):
                print re.sub(r'[\ \n]{2,}', '', text.text)
        break
    key_2 += 1