Crawling google search url list with python

I'd like to scrape google search result url with python.

Here's my code

import requests
from bs4 import BeautifulSoup

def search(keyword):        
    html = requests.get('https://www.google.co.kr/search?q={}&num=100&sourceid=chrome&ie=UTF-8'.format(keyword)).text
    soup = BeautifulSoup(html, 'html.parser')
    result = []
    for i in soup.find_all('h3', {'class':'r'}):
        result.append(i.find('a', href = True) ['href'][7:])
    return result

search('computer')

Then I can get result. First url of the list is wikipedia.com which is,

'https://en.wikipedia.org/wiki/Computer&sa=U&ved=0ahUKEwixyfu7q5HdAhWR3lQKHUfoDcsQFggTMAA&usg=AOvVaw2nvT-2sO4iJenW_fkyCS3i', '?q=computer&num=100&ie=UTF-8&prmd=ivnsbp&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwixyfu7q5HdAhWR3lQKHUfoDcsQsAQIHg'

I want to get clean url, which is 'https://en.wikipedia.org/wiki/Computer' including all the other search result in this case.

How can I modify my codes?