Scrapy 1.4 Documentationto automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces could be the same or another one). parse_node(response, selector) This method is called for the nodes matching the provided tag name (itertag). Receives the response and an Selector for each node. Overriding This spider is very similar to the XMLFeedSpider, except that it iterates over rows, instead of nodes. The method that gets called in each iteration is parse_row(). delimiter A string with the separator0 码力 | 394 页 | 589.10 KB | 1 年前3
Scrapy 1.6 Documentationto automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces could be the same or another one). parse_node(response, selector) This method is called for the nodes matching the provided tag name (itertag). Receives the response and an Selector for each node. Overriding This spider is very similar to the XMLFeedSpider, except that it iterates over rows, instead of nodes. The method that gets called in each iteration is parse_row(). delimiter A string with the separator0 码力 | 295 页 | 1.18 MB | 1 年前3
Scrapy 0.24 Documentationeverytime you need to select something from a response. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated with the root node selectors, each of them representing the nodes selected by the xpath expression given as argument. • css(): returns a list of selectors, each of them representing the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces0 码力 | 222 页 | 988.92 KB | 1 年前3
Scrapy 1.7 Documentationto automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces could be the same or another one). parse_node(response, selector) This method is called for the nodes matching the provided tag name (itertag). Receives the response and an Selector for each node. Overriding This spider is very similar to the XMLFeedSpider, except that it iterates over rows, instead of nodes. The method that gets called in each iteration is parse_row(). delimiter A string with the separator0 码力 | 306 页 | 1.23 MB | 1 年前3
Scrapy 1.8 Documentationregister_namespace() method. 3.2. Spiders 41 Scrapy Documentation, Release 1.8.4 You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces could be the same or another one). parse_node(response, selector) This method is called for the nodes matching the provided tag name (itertag). Receives the response and an Selector for each node. Overriding This spider is very similar to the XMLFeedSpider, except that it iterates over rows, instead of nodes. The method that gets called in each iteration is parse_row(). delimiter A string with the separator0 码力 | 335 页 | 1.44 MB | 1 年前3
Scrapy 0.24 Documentationeverytime you need to select something from a response. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated with the root node selectors, each of them representing the nodes selected by the xpath expression given as argument. css(): returns a list of selectors, each of them representing the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces0 码力 | 298 页 | 544.11 KB | 1 年前3
Scrapy 1.0 Documentationtime you need to select something from a response. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated with the root node selectors, each of which represents the nodes selected by the xpath expression given as argument. • css(): returns a list of selectors, each of which represents the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: 3.2. Spiders 35 Scrapy Documentation, Release0 码力 | 244 页 | 1.05 MB | 1 年前3
Scrapy 1.0 Documentationtime you need to select something from a response. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated with the root node selectors, each of which represents the nodes selected by the xpath expression given as argument. css(): returns a list of selectors, each of which represents the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces0 码力 | 303 页 | 533.88 KB | 1 年前3
Scrapy 0.22 DocumentationHtmlResponse or XmlResponse object as first argument. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated to the root node, or selectors, each of them representing the nodes selected by the xpath expression given as argument. • css(): returns a list of selectors, each of them representing the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces0 码力 | 199 页 | 926.97 KB | 1 年前3
Scrapy 0.20 DocumentationHtmlResponse or XmlResponse object as first argument. You can see selectors as objects that represent nodes in the document structure. So, the first instantiated selectors are associated to the root node, or selectors, each of them representing the nodes selected by the xpath expression given as argument. • css(): returns a list of selectors, each of them representing the nodes selected by the CSS expression given to automatically register namespaces using the register_namespace() method. You can then specify nodes with namespaces in the itertag attribute. Example: class YourSpider(XMLFeedSpider): namespaces0 码力 | 197 页 | 917.28 KB | 1 年前3
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