如何正确编码完整的http url字符串？

import urllib.parse

def encode_url(url):
    parsed_url = urllib.parse.urlparse(url)
    encoded_path = urllib.parse.quote(parsed_url.path)
    encoded_query = urllib.parse.quote(parsed_url.query)
    encoded_fragment = urllib.parse.quote(parsed_url.fragment)
    encoded_url = urllib.parse.urlunparse((parsed_url.scheme, parsed_url.netloc, encoded_path, parsed_url.params, encoded_query, encoded_fragment))
    return encoded_url

url = "http://www.example.com/index.html?key1=value1&key2=value2#section"
encoded_url = encode_url(url)
print(encoded_url)