從清單中刪除不在“語音”中的項目？

Question

url = 'http://www.millercenter.org/president/speeches'

conn = urllib2.urlopen(url)
html = conn.read()

miller_center_soup = BeautifulSoup(html)
links = miller_center_soup.find_all('a')

linklist = [tag.get('href') for tag in links if tag.get('href') is not None]
linklist = str(linklist)

end_of_links = [line for line in linklist if '/events/' in line]
print end_of_links

這是我的輸出的一小段（保存在Python列表中）。

['/events/2015/one-nation-under-god-how-corporate-america-invented-christian-america', 
'/events/2015/a-conversation-with-bernie-sanders', '#reagan', '#gwbush', '#obama',
'#top', '/president/obama/speeches/speech-4427', president/obama/speeches/speech-4430', ...]

我要刪除列表中不包含speeches所有項目。 我試過了filter()並只是創建了另一個列表理解，但是還沒有奏效。 我不知道為什么end_of_links變量不起作用-至少對我來說直觀。

Answer 1

li = ['/ events / 2015 / one-nation-under-god-how-corporate-america-invented-christian-america'，'/ events / 2015 / a-conversation-with-bernie-sanders'，'#reagan '，'＃gwbush'，'＃obama'，'＃top'，'/ president / obama / speeches / speech-4427'，'president / obama / speeches / speech-4430']

匯入

li = [如果re.search（'speeches'，x），則x表示li中的x

打印（li）

['/ president / obama / speechs / speech-4427'，'president / obama / speechs / speech-4430']

Answer 2

昆明理工保持確實包括“演講”的那些：

link_list = ['/events/2015/one-nation-under-god-how-corporate-america-invented-christian-america',
 '/events/2015/a-conversation-with-bernie-sanders', '#reagan', '#gwbush', '#obama',
 '#top', '/president/obama/speeches/speech-4427', 'president/obama/speeches/speech-4430']
speech_list = [_ for _ in link_list if 'speeches' in _]

這是我在Python2.7中的終端會話

>>> link_list = ['/events/2015/one-nation-under-god-how-corporate-america-invented-christian-america',
...  '/events/2015/a-conversation-with-bernie-sanders', '#reagan', '#gwbush', '#obama',
...  '#top', '/president/obama/speeches/speech-4427', 'president/obama/speeches/speech-4430']
>>> speech_list = [_ for _ in link_list if 'speeches' in _]
>>> speech_list
['/president/obama/speeches/speech-4427', 'president/obama/speeches/speech-4430']
>>>