str = ’english’ print ()
A.eng
B.glis
C.english
D.engli
- · 有6位网友选择 B,占比66.67%
- · 有2位网友选择 A,占比22.22%
- · 有1位网友选择 D,占比11.11%
A.eng
B.glis
C.english
D.engli
from scrapy.selector import Selector htmlText=''' <bookstore> <book id="b1"> <title lang="english">Harry Potter</title> <price> 29.99 </price> </book> <book id="b2"> <title lang="chinese">学习XML</title> <price> 39.95 </price> </book> </bookstore> ''' selector=Selector(text=htmlText) s=selector.xpath("//book/price") print(type(s),s) ____________________________________ print(type(s),s) s=selector.xpath("//book/price").extract_first() print(type(s),s) 程序结果: <class 'scrapy.selector.unified.selectorlist'> [ <selector xpath="//book/price" data="<price>29.99</price>"> , <selector xpath="//book/price" data="<price>39.95</price>"> ] <class 'list'> [' <price> 29.99 </price>', ' <price> 39.95 </price>'] <class 'str'> <price> 29.99 </price>
A、s=selector.xpath("/book/price").extract()
B、s=selector.xpath("/book//price").extract()
C、s=selector.xpath("//book//price").extract()
D、s=selector.xpath("//book/price").extract()
A、int print(String str){ } int print(String str,int num){ }
B、int print(String str,int num){ } int print(int num,String str){ }
C、int print(String str){ } static void print(String str){ }
D、int print(double x){ } int print(float x){ }
A.print(Str[-6:])
B.print(Str[-6:-1])
C.print(Str[-6:0])
D.print(Str[-5:-1])
A、print("hello"+str(2020))
B、print("hello"+"world")
C、print("hello"+2020)
A、World Hello
B、oWorld HelloW
C、World World
D、oWorld Hello
A.123456789
B.空
C.12345
D.56789
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