016_python程序变量抽取配置的几种方式

一、json配置文件

json文件的互转,如下例子:

配置文件:example.json

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{     "mysql":{         "host":"localhost",         "user":"root",         "passwd":"my secret password",         "db":"write-math"     },     "other":{         "preprocessing_queue":[             "preprocessing.scale_and_center",             "preprocessing.dot_reduction",             "preprocessing.connect_lines"             ],         "use_anonymous":true     } }

(1)把字典转换为json配置文件

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with open('example.json') as json_data_file:     data = json.load(json_data_file) print(data)

输出：

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1	{u'other': {u'preprocessing_queue': [u'preprocessing.scale_and_center', u'preprocessing.dot_reduction', u'preprocessing.connect_lines'], u'use_anonymous': True}, u'mysql': {u'passwd': u'my secret password', u'host': u'localhost', u'db': u'write-math', u'user': u'root'}}

(2)再转化为文件:

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1 2	with open('result.json', 'w') as fp:     json.dump(data, fp , indent=4)

输出:

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{     "other": {         "preprocessing_queue": [             "preprocessing.scale_and_center",             "preprocessing.dot_reduction",             "preprocessing.connect_lines"         ],         "use_anonymous": true     },     "mysql": {         "passwd": "my secret password",         "host": "localhost",         "db": "write-math",         "user": "root"     } }

二、ini配置文件

config.ini

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; config.ini ; Sample configuration file   [installation] library=%(prefix)s/lib include=%(prefix)s/include bin=%(prefix)s/bin prefix=/usr/local   # Setting related to debug configuration [debug] log_errors=true show_warnings=False   [server] port: 8080 nworkers: 32 pid-file=/tmp/spam.pid root=/www/root signature:     =================================     Brought to you by the Python Cookbook     =================================

python test.py

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#!/usr/bin/python # -*- coding: UTF-8 -*-   from configparser import ConfigParser cfg = ConfigParser() cfg.read('config.ini')                      # ['config.ini']   print cfg.sections()                        # [u'installation', u'debug', u'server'] print cfg.get('installation','library')     # /usr/local/lib print cfg.getboolean('debug', 'log_errors') # True print cfg.getint('server','port')           # 8080 print cfg.getint('server','nworkers')       #32 print(cfg.get('server','signature')) ''' ================================= Brought to you by the Python Cookbook ================================= '''