Xpath scrapy filter过滤的选择器

Question

是否可以进行类似的操作（仅使用xpath）：

filtered = response.xpath('//input[@type="submit"]')
filtered.xpath('[contains(@name, "abc")]')

上面的代码产生异常：

  

ValueError：XPath错误：[包含（@name，   “ abc”）]

Answer 1

您可以选择最初正确的元素：

filtered = response.xpath('//input[@type="submit"][contains(@name, "abc")]')

或过滤如下

filtered = response.xpath('//input[@type="submit"]')
# by exact @name value
new_filtered = [item for item in filtered if item.attrib['name'] == 'abc']
# by partial @name value
new_filtered = [item for item in filtered if 'abc' in item.attrib['name']]