[
'How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?',
'How to call an external command?',
'What are metaclasses in Python?',
'Does Python have a ternary conditional operator?',
'How do you remove duplicates from a list whilst preserving order?',
'Convert bytes to a string',
'How to get line count of a large file cheaply in Python?',
"Does Python have a string 'contains' substring method?",
'Why is “1000000000000000 in range(1000000000000001)” so fast in Python 3?'
]
两个页面的抓取结果为: 6 x) i8 l, o) t3 h # d, L( {9 c5 @; v, u& k' V+ X抓取确切结果 " r. i* E) P+ S. R6 V 当你只想抓取某个确切的结果,可以使用get_result_exact方法,即从wanted_list中以完全相同的顺序检索数据: 3 U. N. m! c5 \8 J& M
比如抓取页面中排第2的相关文章标题,执行结果:- n Q. h& B7 s8 n
; j) j7 }9 D; a1 R$ p f/ j8 T y
自定义请求模块参数$ O3 W5 e, R1 k: V4 r
你还可以传递任何自定义请求模块参数。例如,你可能想使用代理或自定义头: 2 J0 h! I3 O. s% E% Z. d