Vipshop work practice: Jason's deserialization application

  JSON（JavaScript Object Notation） Is a lightweight data exchange format , It is JavaScript Subset , Easy to read and write . There are two common types of structures ,Key_Value An ordered list of sets and values for , They correspond to each other Python Dictionaries and lists in .


  JSON There are the following methods in common use ：

   The following is based on the working practice in vipshop , demonstration Json Of deserialization application . Open one of the links , Visible mainly through API（Application Programming Interface） Load data . stay Request URL in ,？ Behind it is a pile of contents that seem to be alien texts , These are all query strings . Pair with key value key=value The formal assignment of , Use... Between multiple key value pairs & come together . Query string is used for information transmission , The server can know what you want through it , So as to return the corresponding content to you .

   First try to get the web page source code data , And then try to pass json() Method to decode the response content , As a result, the decoding error prompt is encountered .

   stay " Preview" so , Not at all Json data format .

   First use replace() Method hold ‘getMerchandiseDroplets1(’ and ‘）’ Delete , And then through json.loads() Method , After deserialization , Successfully converted to Python Data objects for - dict

Join the loop , You can use dict Value , Print out all relevant product names .

for i in range(33):
print(str1_json[‘data’][‘products’][i][‘title’])