The Configparser of Python

I. Introduction of Configparser

Configparser is the package that is used to read the configuration file. The format of the configuration file is as follows: the brackets "[]" are included in the section. section below is a configuration content similar to Key-value.

1: [db]

2:db_host = 127.0.0.1

3:db_port =

4:db_user = root

5:db_pass = Rootroot

6:

7: [Concurrent]

8:thread = Ten

9:processor =

The brackets "[]" are included in section. The section is followed by the configuration of options similar to Key-value.

Ii. Initial work of Configparser

Using Configparser preferred to initialize the instance and read the configuration file:

1:CF = Configparser.configparser ()

2:cf.read ("Profile name")

Iii. Common methods of Configparser

1. Get all sections. That is, all "[]" in the configuration file is read to the list:

1:s = cf.sections ()

2:print ' section: ', S

Output (The following will be the example of profiles in profile):

1:section: [' db ', ' concurrent ']

2. Gets the options for the specifiedsection. To read a key in a section of the configuration file into the list:

1:o = cf.options ("db")

2:print ' options: ', O

Will output:

1:options: [' db_host ', ' db_port ', ' db_user ', ' Db_pass ']

3. Gets the configuration information for the specified section.

1:v = Cf.items ("db")

2:print ' db: ', v

Will output:

1:db: [(' Db_host ', ' 127.0.0.1 '), (' Db_port ', ' ') ', (' Db_user ', ' Root '), (' Db_pass ', ' rootroot ')]

4. Read the option information for the specified section by type.

There are also getfloat and Getboolean.

1: #可以按照类型读取出来

2:db_host = Cf.get ("db", "Db_host")

3:db_port = Cf.getint ("db", "Db_port")

4:db_user = Cf.get ("db", "Db_user")

5:db_pass = Cf.get ("db", "Db_pass")

6:

7: # Returns the integer type

8:threads = cf.getint ("Concurrent", "thread")

9:processors = cf.getint ("Concurrent", "Processor")

Ten:

11:print "Db_host:", Db_host

12:print "Db_port:", Db_port

13:print "Db_user:", Db_user

14:print "Db_pass:", Db_pass

15:print "Thread:", Threads

16:print "Processor:", processors

Will output:

1:db_host:127.0.0.1

2:db_port:22

3:db_user:root

4:db_pass:rootroot

5:thread:10

6:processor:20

5. Set the value of an option . (Remember to write back at the end)

1:cf.set ("db", "Db_pass", "Zhaowei")

2:cf.write (Open ("test.conf", "W"))

6. Add asection. (also to write back)

1:cf.add_section (' liuqing ')

2:cf.set (' liuqing ', ' int ', ' a ')

3:cf.set (' liuqing ', ' bool ', ' true ')

4:cf.set (' liuqing ', ' float ', ' 3.1415 ')

5:cf.set (' liuqing ', ' baz ', ' fun ')

6:cf.set (' liuqing ', ' Bar ', ' Python ')

7:cf.set (' liuqing ', ' foo ', '% (bar) s is% (baz) s! ')

8:cf.write (Open ("test.conf", "W"))

7. Remove section or option. (as long as the changes will be written back to the OH)

1:cf.remove_option (' liuqing ', ' int ')

2:cf.remove_section (' liuqing ')

3:cf.write (Open ("test.conf", "w"))

Click (here) to collapse or open

2. #!/usr/bin/env python
4. From Configparser import Configparser
6. Configfile= "F.txt"
8. Config=configparser ()
10. Config.read (ConfigFile)
12. Print Config.get (' Messages ', ' greeting ')
14. Radius=input (Config.get (' Messages ', ' questions ') + ')
16. Print Config.get (' Messages ', ' result ')
18. Print config.getfloat (' numbers ', ' pi ') *radius**2
22. S=config.sections ()
24. print ' section: ', S
26. O=config.options (' Messages ')
28. print ' Messages option: ', O
30. V=config.items ("Messages")
32. print ' Message de Xinxi: ', V
36. Config.add_section (' liuyang1 ')
38. Config.set (' liuyang1 ', ' int ', ' 15 ')
40. Config.set (' Liuyang ' 1, ' hhhh ', ' Hello World ')
42. Config.write (Open ("F.txt", "w"))
44. Print Config.get (' liuyang1 ', ' int ')
46. Print Config.get (' liuyang1 ', ' hhhh ')
58. #!/usr/bin/env python
60. Import Configparser
62. Import Sys
64. Config=configparser.configparser ()
66. Config.add_section ("Book1")
68. Config.set ("Book1", "title", "Hello World")
70. Config.set ("Book1", "aut", "log")
72. Config.write (Open ("F.txt", "w"))

Python's Configparser