Python学习笔记——基础篇【第六周】——PyYAML & configparser模块

PyYAML模块

Python也可以很容易的处理ymal文档格式，只不过需要安装一个模块，参考文档：http://pyyaml.org/wiki/PyYAMLDocumentation

常用模块之ConfigParser模块

用于生成和修改常见配置文档，当前模块的名称在 python 3.x 版本中变更为 configparser。

来看一个好多软件的常见文档格式如下

[DEFAULT]
ServerAliveInterval = 45
Compression = yes
CompressionLevel = 9
ForwardX11 = yes

[bitbucket.org]
User = hg

[topsecret.server.com]
Port = 50022
ForwardX11 = no

如果想用python生成一个这样的文档怎么做呢？

import configparser

config = configparser.ConfigParser()
config["DEFAULT"] = {‘ServerAliveInterval‘: ‘45‘,
                      ‘Compression‘: ‘yes‘,
                     ‘CompressionLevel‘: ‘9‘}

config[‘bitbucket.org‘] = {}
config[‘bitbucket.org‘][‘User‘] = ‘hg‘
config[‘topsecret.server.com‘] = {}
topsecret = config[‘topsecret.server.com‘]
topsecret[‘Host Port‘] = ‘50022‘     # mutates the parser
topsecret[‘ForwardX11‘] = ‘no‘  # same here
config[‘DEFAULT‘][‘ForwardX11‘] = ‘yes‘
with open(‘example.ini‘, ‘w‘) as configfile:
   config.write(configfile)

写完了还可以再读出来哈。

 1 >>> import configparser
 2 >>> config = configparser.ConfigParser()
 3 >>> config.sections()
 4 []
 5 >>> config.read(‘example.ini‘)
 6 [‘example.ini‘]
 7 >>> config.sections()
 8 [‘bitbucket.org‘, ‘topsecret.server.com‘]
 9 >>> ‘bitbucket.org‘ in config
10 True
11 >>> ‘bytebong.com‘ in config
12 False
13 >>> config[‘bitbucket.org‘][‘User‘]
14 ‘hg‘
15 >>> config[‘DEFAULT‘][‘Compression‘]
16 ‘yes‘
17 >>> topsecret = config[‘topsecret.server.com‘]
18 >>> topsecret[‘ForwardX11‘]
19 ‘no‘
20 >>> topsecret[‘Port‘]
21 ‘50022‘
22 >>> for key in config[‘bitbucket.org‘]: print(key)
23 ...
24 user
25 compressionlevel
26 serveraliveinterval
27 compression
28 forwardx11
29 >>> config[‘bitbucket.org‘][‘ForwardX11‘]
30 ‘yes‘

configparser增删改查语法

 1 [section1]
 2 k1 = v1
 3 k2:v2
 4
 5 [section2]
 6 k1 = v1
 7
 8 import ConfigParser
 9
10 config = ConfigParser.ConfigParser()
11 config.read(‘i.cfg‘)
12
13 # ########## 读 ##########
14 #secs = config.sections()
15 #print secs
16 #options = config.options(‘group2‘)
17 #print options
18
19 #item_list = config.items(‘group2‘)
20 #print item_list
21
22 #val = config.get(‘group1‘,‘key‘)
23 #val = config.getint(‘group1‘,‘key‘)
24
25 # ########## 改写 ##########
26 #sec = config.remove_section(‘group1‘)
27 #config.write(open(‘i.cfg‘, "w"))
28
29 #sec = config.has_section(‘wupeiqi‘)
30 #sec = config.add_section(‘wupeiqi‘)
31 #config.write(open(‘i.cfg‘, "w"))
32
33
34 #config.set(‘group2‘,‘k1‘,11111)
35 #config.write(open(‘i.cfg‘, "w"))
36
37 #config.remove_option(‘group2‘,‘age‘)
38 #config.write(open(‘i.cfg‘, "w"))