這個例外處理是在做什麼的？

[linroex]

try:
    #uer "str" ,  because list not use 
    topic = str(topic_split.findall(data)).replace('<h1 class=\"headline\">', '').replace('</h1>', '').replace('\\u3000', '', 20).replace('╱', '', 10).replace('[', '', 10).replace(']', '',10)
    author = str(author_split.findall(data)).replace('<span class=\"provider org\">', '').replace('</span>', '').replace('[', '', 10).replace(']', '',10)
    date = str(date_split.findall(data)).replace('>', '<', 10).split('<')[2]      #this is so trouble,  it is ["",  "<abbr title = ...",  "date",  "</abbr>",  ""],  so is data[2]
    text = str(text_split.findall(data)).replace('<p class=\"first\">', '').replace('</p>', '', 100).replace(' ', '', 100).replace('<p>', '', 100).replace('[', '', 10).replace(']', '',10).replace('\',\'', '', 10)

    #deal with date
    if '下' in date:
        date = date.replace('下午', '')
        try:
            date = datetime.strptime(date, '%Y年%m月%d日 %H:%M') + timedelta(hours = 12)
        except:
            date = datetime.strptime(date, '%Y年%m月%d日 %H:%M') + timedelta(days = 1, hours = -12)
    else:
        date = date.replace('上午', '')
        date = datetime.strptime(date, '%Y年%m月%d日 %H:%M') 


    self.data.append(News(topic, author, date, text).toJson())

    print('第', len(self.data), '則新聞已擷取完')
except:
    pass

為什麼 except 會直接 pass？