charpOneDemoPractise

from urllib.request import urlopen
from urllib.error import HTTPError,URLError
from bs4 import BeautifulSoup
def getTitle(url):
    try:
        html = urlopen(url)
    except (HTTPError,URLError) as e:
        return None
    
    try:
        bsObj = BeautifulSoup(html.read())
        title = bsObj.body.h1
    except AttributeError as e:
        return None;
    return title;

title = getTitle("http://www.pythonscraping.com/pages/page1.html")
if title == None:
    print("Title could not be found")
else:
    print("title  is ",title)

sublime 黑底高亮，红绿 紫蓝 白色都有，尤其是紫色的None,漂亮。

terminal 调成经典的黑底绿字，爽。