JSON and Pickle

Two modules for serialization

JSON: Used to convert between string and Python data types

Pickle: Converting between Python-specific types and Python data types

The JSON module provides four functions: dumps dump loads load

The Pickle module provides four functions: dumps dump loads load

Pickle instances:

  Import Pickle
  data = {' K1 ': 123, ' K2 ': ' Hello '}
  Pickle. Dumps converts data to a string that can be recognized only by Python speech in a special form
  Pickle. dumps (data)
  Print P_str
  6: "'
  7: Print the result:
  8: (dp0
  9:s ' K2 '
10:p1
11:s ' Hello '
12:p2
13:ss ' K1 '
14:p3
15:i123
16:s.
17: "'
Pickle. dump transforms the data into a string that is known only to the Python voice in a special form and writes the file
Open (' e:/python/tmp/result.pk ', ' W ') as FP:
:     pickle.  Dump(data, FP)

JSON instance

  Import JSON
  data = {' K1 ': 123, ' K2 ': ' Hello '}
  3: # JSON. dumps converts data into strings that are known to all programming languages in a special form
  4:J_STR = json. dumps (data)
  Print J_str
  6: # Print Result: {"K2": "Hello", "K1": 123}
  7: # JSON. dump transforms the data into a string that is known to all languages in a special form and writes the file
  Open (' e:/python/tmp/result.pk ', ' W ') as JP:
  9:     JSON.  Dump(data, JP)

Configparser

  1: #!/usr/bin/env python
  2: #-*-Coding:utf-8-*-
  3: # to operate on a specific configuration, the name of the current module is changed to Configparser in the Python 3.x version.
  Import Configparser
  5:config = Configparser.configparser ()
  6:config. Read (' Goods.txt ')
  
  8: # Get the name of the module
  9:secs = Config.sections ()
Print secs
11: # Result: [' section1 ', ' Section2 ']
12: # Gets the key value of the specified module
13:options = config.options (' Section1 ')
Print Options
15: # Result: [' K1 ', ' K2 ']
16: # Gets the items under the specified module
17:item_list = Config.items (' Section1 ')
Print item_list
19: # Result: [(' K1 ', ' v1 '), (' K2 ', ' V2 ')]
20: # Gets the value of the key under the specified module
21:val = Config.get (' Section1 ', ' K2 ')
Print val

JSON and Pickle