用于序列化的两个模块

json:用于字符串和python数据类型间进行转换

pickle:用于python特有的类型和python的数据类型间进行转换

json模块提供了四个功能:dumps dump loads load

pickle模块提供了四个功能: dumps dump loads load

pickle实例:

  1: import pickle
  2: data = {'k1':123,'k2':'hello'}
  3: # pickle.dumps将数据通过特殊的形式转换为只用python语音能识别的字符串
  4: p_str = pickle.dumps(data)
  5: print p_str
  6: '''
  7: 打印结果:
  8: (dp0
  9: S'k2'
 10: p1
 11: S'hello'
 12: p2
 13: sS'k1'
 14: p3
 15: I123
 16: s.
 17: '''
 18: # pickle.dump 将数据通过特殊的形式转换为只有python语音认识的字符串,并写入文件
 19: with open('E:/python/tmp/result.pk','w') as fp:
 20:     pickle.dump(data,fp)

json实例

  1: import json
  2: data = {'k1':123,'k2':'hello'}
  3: # json.dumps 将数据通过特殊的形式转换为所有程序语言都认识的字符串
  4: j_str = json.dumps(data)
  5: print j_str
  6: # 打印结果:{"k2": "hello", "k1": 123}
  7: # json.dump 将数据通过特殊的形式转换为所有语言都认识的字符串,并写入文件
  8: with 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: # 用于对特定的配置进行操作,当前模块的名称在 python 3.x 版本中变更为 configparser。
  4: import ConfigParser
  5: config = ConfigParser.ConfigParser()
  6: config.read('goods.txt')
  7:
  8: # 获取模块的名称
  9: secs = config.sections()
 10: print secs
 11: # 结果:['section1', 'section2']
 12: # 获取指定模块的key值
 13: options = config.options('section1')
 14: print options
 15: # 结果:['k1', 'k2']
 16: # 获取指定模块下的items
 17: item_list = config.items('section1')
 18: print item_list
 19: # 结果:[('k1', 'v1'), ('k2', 'v2')]
 20: # 获取指定模块下的key的值
 21: val = config.get('section1','k2')
 22: print val
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