Need help with python

import os
import ssl
import logging

from bs4 import BeautifulSoup
import urllib, re
from urllib.request import Request, urlopen

# Global variables

user_agent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7'
headers = {'User-Agent':user_agent,} 
url_google = 'https://www.google.com/search?&q='
url_duck = 'https://duckduckgo.com/?q='

# Get user's search query and format the string
query = input('What are you searching for?: ')
query = re.sub('\\ |\\?|\\.|\\!|\\/|\\;|\\:', '+', query)

# use user's choice to make request 
choice = int(input('Select Search Engine, Google = 1, Duckduckgo = 2: '))

googlesearch = url_google + query
ducksearch = url_duck + query

def set_custom_log_info(filename):
    logging.basicConfig(filename=filename, level=logging.INFO)

def report(e:Exception):
    logging.exception(str(e))

def write_webpage_as_html(filename, data=''):
    try:
        with open(filename, 'wb') as fobj:
            fobj.write(data)
    except Exception as e:
        print(e)
        report(e)
        return False
    else:
        return True

class Search:
    _url   = ''
    _data  = ''
    _log  = None
    _soup  = None

def __init__(self, url, log):
    self._url  = url 
    self._log = log

def retrieve_webpage(self):
        try:
            if choice == 1:
                html = urllib.request.urlopen(googlesearch,None,headers)
            else:
                html = urllib.request.urlopen(ducksearch,None,headers)
        except Exception as e:
            print (e)
            self._log.report(str(e))
        else:
            self._data = html.read()
            if len(self._data) > 0:
                print ("Retrieved successfully")

if __name__ == '__main__':
    search_scrap = Search()
    search_scrap.retrieve_webpage()
    search_scrap.write_webpage_as_html()