python3 Import error: No module name urllib2

在把舊的 python 2.x code 搬到 python 3.x 時，遇到 error:

Import error: No module name urllib2

程式碼：

import urllib2.request

response = urllib2.urlopen("http://www.google.com")
html = response.read()
print(html)

解法：

https://stackoverflow.com/questions/2792650/import-error-no-module-name-urllib2

try:

#! /usr/bin/env python

try:
    # For Python 3.0 and later
    from urllib.request import urlopen
except ImportError:
    # Fall back to Python 2's urllib2
    from urllib2 import urlopen

html = urlopen("http://www.google.com/")
print(html.read())