python中lxml的使用案例
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</html>然后再pycharm里导入lxml模块进行x-path
import lxml.etree as lewith open('edu.html','r',encoding='utf-8') as f:html = f.read()# print(html)html_x = le.HTML(html)# print(html_x)div_x_s = html_x.xpath('//div[@class="classify_cList"]')# print(div_x_s)data_s = []for div_x in div_x_s:category1 = div_x.xpath('./h3/a/text()')[0]# print(category1)category2_s = div_x.xpath('./div/span/a/text()')# print(category2_s)data_s.append(dict(category1 = category1,category2_s = category2_s))print(data_s)for data in data_s:print(data.get('category1'))for category2 in data.get('category2_s'):print(' ',category2)
JsonPath 案例
import jsonpython_data = [{'username':'name1','vip':True,},{'username':None,'vip':False,},
]
# dumps 用于把Python对象转化成Json对象
json_data = json.dumps(python_data)
print(json_data)
print(type(json_data))# loads 用于把Json对象转换成python对象
python_data2 = json.loads(json_data)
print(python_data2)
print(type(python_data2))
import jsonpython_data = [{'username':'name1','vip':True,},{'username':None,'vip':False,},
]# dump把python类型的数据转换成Json类型的字符串
json.dump(python_data,open('json.txt','w'))# load用于读取本地的json数据，并转化python对象
python_data2 = json.load(open('json.txt'))
print(python_data2)
