老师，如何往出循环每组数据？

Question

执行上面的代码返回

老师，我这个为什么不是一组一组的数据，而是把所有数据都put到了一个list里面，我是想要类似于下面这样的数据
[
[初识HTML(5)+CSS(3)-2020升级版,入门,1133597],
[Java入门第一季,入门,1075269]
]

代码如下：
from scrapy import Selector
from urllib import request

url = 'https://www.imooc.com/course/list’
r = request.urlopen(url)
htmls = r.read()
htmls = str(htmls, encoding=‘utf-8’)

sel = Selector(text=htmls)
a = sel.xpath(’//*[@id=“main”]/div[2]/div[2]/div[1]/div/div/a/div[2]/h3/text()|//div[@class=“course-card-info”]/span/text()’).extract()
if a:
for a1 in a:
print(a1)

from scrapy import Selector
from urllib import request

url = 'https://www.imooc.com/course/list'
r = request.urlopen(url)
htmls = r.read()
htmls = str(htmls, encoding='utf-8')

sel = Selector(text=htmls)
a = sel.xpath('//*[@id="main"]/div[2]/div[2]/div[1]/div/div/a/div[2]/h3/text()|//div[@class="course-card-info"]/span/text()').extract()
if a:
    for a1 in a:
        print(a1)

Answer 1

bobby 2020-07-09 18:11:31

下面的代码能否格式化以下  我需要在本地运行以下

• 提问者 拥抱开源 #1

  from scrapy import Selector
  from urllib import request
  
  url = 'https://www.imooc.com/course/list'
  r = request.urlopen(url)
  htmls = r.read()
  htmls = str(htmls, encoding='utf-8')
  
  sel = Selector(text=htmls)
  a = sel.xpath('//*[@id="main"]/div[2]/div[2]/div[1]/div/div/a/div[2]/h3/text()|//div[@class="course-card-info"]/span/text()').extract()
  if a:
      for a1 in a:
          print(a1)

• 提问者 拥抱开源 #2

  老师，我把问题修改了一下，下面是代码

Answer 2

bobby 2020-07-09 18:26:01

# import grpc
#
# from grpc_test.proto import product_pb2_grpc
# from grpc_test.proto import product_pb2
#
# product_channel = grpc.insecure_channel('127.0.0.1:9090')
# product_client = product_pb2_grpc.ProductStub(product_channel)
# # rsp = product_client.CreateProduct(product_pb2.CreateProductRequest(name="bobby"))
# # print(rsp.id, rsp.name)
# rsp = product_client.GetProduct(product_pb2.GetProductRequest(id=2))
# print(rsp.id, rsp.name)
#


from scrapy import Selector

from urllib import request



url = 'https://www.imooc.com/course/list'

r = request.urlopen(url)

htmls = r.read()

htmls = str(htmls, encoding='utf-8')



sel = Selector(text=htmls)

a = sel.xpath('//div[@class="course-card-content"]')
data = []
if a:
    for a1 in a:
        name = a1.xpath(".//h3[@class='course-card-name']/text()").extract()[0]
        degree = a1.xpath(".//div[@class='course-card-info']/span[1]/text()").extract()[0]
        nums = a1.xpath(".//div[@class='course-card-info']/span[2]/text()").extract()[0]
        data.append((name, degree, nums))

print(data)

• 提问者 拥抱开源 #1

  谢谢老师