本文整理汇总了Python中scrapy.http.request.Request.meta["catName"]方法的典型用法代码示例。如果您正苦于以下问题：Python Request.meta["catName"]方法的具体用法？Python Request.meta["catName"]怎么用？Python Request.meta["catName"]使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类scrapy.http.request.Request的用法示例。
在下文中一共展示了Request.meta["catName"]方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: parse
# 需要导入模块: from scrapy.http.request import Request [as 别名]
# 或者: from scrapy.http.request.Request import meta["catName"] [as 别名]
def parse(self, response):
tabs = []
tab_selector = response.xpath('//div[@id="siteDirectory"]')
### loop for all tabs
for tab in tab_selector.xpath('.//div[@class="popover-grouping"]'):
tabNameSel = tab.xpath("h2/text()").extract()
if tabNameSel:
tabName = tabNameSel[0]
fobj = open(tabName + ".txt", "a+")
cat_selector = tab.xpath(".//ul")
### loop for all categories
for category in cat_selector.xpath("li"): #'.//div[contains(@class, "ht180")]
catNameSel = category.xpath(
"a/text()"
).extract() # //div[contains(@class, "top-menu unit")]/ul/li/div/div/div/ul/li[@class="heading"]
# print category.extract()
if catNameSel:
catName = catNameSel[0]
catLinkSel = category.xpath("a/@href").extract()
if catLinkSel:
catLink = "http://www.amazon.in" + catLinkSel[0]
request = Request(catLink, callback=self.parse_subcatpage)
request.meta["fobj"] = fobj
request.meta["tabName"] = tabName
request.meta["catName"] = catName
yield request
fobj.close()示例2: parse_subcatpage
# 需要导入模块: from scrapy.http.request import Request [as 别名]
# 或者: from scrapy.http.request.Request import meta["catName"] [as 别名]
def parse_subcatpage(self, response):
fobj = response.meta["fobj"]
tabName = response.meta["tabName"]
catName = response.meta["catName"]
subcatSel = response.xpath('//div[@id="refinements"]')
if subcatSel: ## in few categories subcategories are not present
subcatNameSel = subcatSel.xpath("div/ul/li/a/span[1]/text()").extract()
if subcatNameSel:
subcatName = subcatNameSel[0]
print subcatName + "sub category......"
filter_selector = subcatSel
index = 1
for filtr in filter_selector.xpath(".//h2"):
filterNameSel = filtr.xpath("text()").extract()
# print filterNameSel
if filterNameSel:
filterName = filterNameSel[0]
result = str("\n" + tabName + " -> " + catName + " -> " + filterName + " -> ")
# valueSelector = filter_selector.xpath('.//ul['+str(index)+']') ##fliters = filters(error in SD site)
valueSelector = filtr.xpath(".//following-sibling::ul[1]")
valueLinkSel = valueSelector.xpath('.//a[span[contains(@class, "seeMore")]]/@href').extract()
if valueLinkSel:
valueLink = "http://www.amazon.in" + valueLinkSel[0]
requestValue = Request(valueLink, callback=self.parse_valuepage)
requestValue.meta["fobj"] = fobj
requestValue.meta["tabName"] = tabName
requestValue.meta["catName"] = catName
requestValue.meta["filterName"] = filterName
yield requestValue
# print valueSelector.extract()
else:
print result.encode("utf-8")
if fobj.closed:
fobj = open(fobj.name, "a+")
fobj.write(result.encode("utf-8"))
for value in valueSelector.xpath("li"):
valueNameSel = value.xpath(".//span/text()").extract()
if valueNameSel:
valueName = valueNameSel[0].strip() + " | "
print valueName.encode("utf-8")
fobj.write(valueName.encode("utf-8"))
index += 1
#### brand filter has a different structure here, hence extra code for that
brand_sel = response.xpath('//ul[@id="ref_3837712031"]')
print brand_sel.extract()
brandLinkSel = brand_sel.xpath('li/a[span[contains(@class, "seeMore")]]/@href').extract()
print "brand link "
print brandLinkSel
if brandLinkSel:
brandLink = "http://www.amazon.in" + brandLinkSel[0]
print brandLink
requestBrand = Request(brandLink, callback=self.parse_valuepage)
requestBrand.meta["fobj"] = fobj
requestBrand.meta["tabName"] = tabName
requestBrand.meta["catName"] = catName
requestBrand.meta["filterName"] = "Brands"
yield requestBrand
else:
filterName = "Brands"
result = str("\n" + tabName + " -> " + catName + " -> " + filterName + " -> ")
print result.encode("utf-8")
for value in brand_sel.xpath('ul[@class="groupMultiSel"]/li'):
valueNameSel = value.xpath(".//a/span[1]/text()").extract()
if valueNameSel:
valueName = valueNameSel[0].strip() + " | "
print valueName.encode("utf-8")
fobj.write(valueName.encode("utf-8"))