 Scrapy 1.0 Documentationselectors. For working with CSS and XPath expressions, Scrapy provides Selector class and convenient shortcuts to avoid instantiating selectors yourself every time you need to select something from a response settings.Settings object at 0x3fadc50> [s] spider Scrapy 1.0 Documentationselectors. For working with CSS and XPath expressions, Scrapy provides Selector class and convenient shortcuts to avoid instantiating selectors yourself every time you need to select something from a response settings.Settings object at 0x3fadc50> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update by calling response.selector.xpath() or response.selector.css(). There are also some convenience shortcuts like response.xpath() or response.css() which map directly to response.selector.xpath() and response 0 码力 | 244 页 | 1.05 MB | 1 年前3
 Scrapy 1.0 Documentationselectors. For working with CSS and XPath expressions, Scrapy provides Selector class and convenient shortcuts to avoid instantiating selectors yourself every time you need to select something from a response settings.Settings object at 0x3fadc50> [s] spider Scrapy 1.0 Documentationselectors. For working with CSS and XPath expressions, Scrapy provides Selector class and convenient shortcuts to avoid instantiating selectors yourself every time you need to select something from a response settings.Settings object at 0x3fadc50> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or by calling response.selector.xpath() or response.selector.css(). There are also some convenience shortcuts like response.xpath() or response.css() which map directly to response.selector.xpath() and response 0 码力 | 303 页 | 533.88 KB | 1 年前3
 Scrapy 1.2 DocumentationSettings object at 0x7fa91d888c10> [s] spider Scrapy 1.2 DocumentationSettings object at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts • shelp() - print a help with the list of available objects and shortcuts • fetch(request_or_url) - fetch a new response from the given 0 码力 | 266 页 | 1.10 MB | 1 年前3
 Scrapy 1.1 DocumentationSettings object at 0x7fa91d888c10> [s] spider Scrapy 1.1 DocumentationSettings object at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts • shelp() - print a help with the list of available objects and shortcuts • fetch(request_or_url) - fetch a new response from the given 0 码力 | 260 页 | 1.12 MB | 1 年前3
 Scrapy 1.3 DocumentationSettings object at 0x7fa91d888c10> [s] spider Scrapy 1.3 DocumentationSettings object at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts • shelp() - print a help with the list of available objects and shortcuts • fetch(url[, redirect=True]) - fetch a new response from 0 码力 | 272 页 | 1.11 MB | 1 年前3
 Scrapy 1.6 DocumentationSettings object at 0x7fa91d888c10> [s] spider Scrapy 1.6 DocumentationSettings object at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update get() 'good' Querying responses using XPath and CSS is so common that responses include two more shortcuts: response. xpath() and response.css(): >>> response.xpath('//span/text()').get() 'good' >>> response cases it is more convenient to use response.css() and response.xpath() shortcuts. By using response.selector or one of these shortcuts you can also ensure the response body is parsed only once. But if required 0 码力 | 295 页 | 1.18 MB | 1 年前3
 Scrapy 1.1 Documentationobject at 0x7fa91d888c10> [s] spider Scrapy 1.1 Documentationobject at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts shelp() - print a help with the list of available objects and shortcuts fetch(request_or_url) - fetch a new response from the given 0 码力 | 322 页 | 582.29 KB | 1 年前3
 Scrapy 1.2 Documentationobject at 0x7fa91d888c10> [s] spider Scrapy 1.2 Documentationobject at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts shelp() - print a help with the list of available objects and shortcuts fetch(request_or_url) - fetch a new response from the given 0 码力 | 330 页 | 548.25 KB | 1 年前3
 Scrapy 1.5 DocumentationSettings object at 0x7fa91d888c10> [s] spider Scrapy 1.5 DocumentationSettings object at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or URL) and update >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts • shelp() - print a help with the list of available objects and shortcuts • fetch(url[, redirect=True]) - fetch a new response from 0 码力 | 285 页 | 1.17 MB | 1 年前3
 Scrapy 1.3 Documentationobject at 0x7fa91d888c10> [s] spider Scrapy 1.3 Documentationobject at 0x7fa91d888c10> [s] spider- [s] Useful shortcuts: [s] shelp() Shell help (print this help) [s] fetch(req_or_url) Fetch request (or >] Querying responses using XPath and CSS is so common that responses include two convenience shortcuts: response.xpath() and response.css(): >>> response.xpath('//title/text()') [ - Shortcuts shelp() - print a help with the list of available objects and shortcuts fetch(url[, redirect=True]) - fetch a new response from the 0 码力 | 339 页 | 555.56 KB | 1 年前3
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