Configparser explanation of the Python parsing configuration module

1. Basic Read configuration file

-read (filename) reads INI file contents directly

-sections () gets all the sections and returns as a list

-options (section) gets all the option of the section

-items (section) gets all the key-value pairs of the section

-get (section,option) Gets the value of option in section, returned as a string type

-getint (section,option) Gets the value of option in section, returns the int type, and the corresponding Getboolean () and GetFloat () functions.

2. Basic Write Configuration file

-add_section (section) Add a new section

-set (section, option, value) sets the option in the section and needs to call write to write the content to the configuration file.

3. Basic examples

Test.conf

[Sec_a] A_key1 = A_key2 = Ten    [sec_b] b_key1 = 121 B_key2 = b_value2 B_key3 = $r B_key4 = 127.0.0.1

parse_test_conf.py

Import Configparser CF = Configparser.configparser () #read config cf.read ("test.conf") # return all section secs = Cf.sect Ions () print ' sections: ', secs    opts = cf.options ("sec_a") print ' options: ', opts    KVS = Cf.items ("sec_a") print ' SE C_a: ', KVS    #read by Type Str_val = Cf.get ("Sec_a", "a_key1") Int_val = Cf.getint ("Sec_a", "A_key2")    print "Value f Or sec_a ' s a_key1: ", str_val print" value for sec_a ' s A_key2: ", int_val    #write config #update value cf.set (" Sec_b "," b _key3 "," new-$r ") #set a new value Cf.set (" Sec_b "," B_newkey "," New-value ") #create a new section cf.add_section (' A_new_se Ction ') cf.set (' a_new_section ', ' new_key ', ' new_value ')    #write back to configure File Cf.write (open ("test.conf", "W "))

Get terminal output:

Sections: [' Sec_b ', ' sec_a '] options: [' a_key1 ', ' A_key2 '] sec_a: [(' A_key1 ', ' I ' m value '), (' A_key2 ', ' a ')] value for SE C_a ' s a_key1:i ' m value value for sec_a ' s a_key2:22

Test.conf after the update

[Sec_b] B_newkey = new-value B_key4 = 127.0.0.1 B_key1 = 121 B_key2 = b_value2 B_key3 = new-$r    [sec_a] a_key1 = i ' m va Lue A_key2 =    [a_new_section] New_key = New_value

The Configparser module in 4.Python defines 3 classes to operate on the INI file. Rawconfigparser, Configparser, Safeconfigparser, respectively. Rawcnfigparser is the most basic INI file read class, Configparser, Safeconfigparser supports parsing of the% (value) s variable.

Setting configuration file test2.conf

[Portal] url = http://% (host) s:% (port) s/portal host = localhost port = 8080

Using Rawconfigparser:

Import configparser   CF = Configparser.rawconfigparser ()   print "Use Rawconfigparser () read" Cf.read (" Test2.conf ") Print Cf.get (" Portal "," url ")   print" Use Rawconfigparser () write "Cf.set (" Portal "," url2 ","% (host) s: % (port) S ") Print Cf.get (" Portal "," Url2 ")

Get terminal output:

Use Rawconfigparser () read http://% (host) s:% (port) s/portal use Rawconfigparser () write% (host) s:% (port) s

Use Configparser instead:

Import configparser   CF = Configparser.configparser ()   print "Use Configparser () read" Cf.read ("test2.conf") Print Cf.get ("Portal", "url")   print "Use Configparser () write" Cf.set ("Portal", "url2", "% (host) s:% (port) S") print Cf.get ("Portal", "Url2")

Get terminal output:

Use Configparser () Read http://localhost:8080/Portal use Configparser () write localhost:8080

Use Safeconfigparser instead:

Import configparser   CF = Configparser.safeconfigparser ()   print "Use Safeconfigparser () read" Cf.read (" Test2.conf ") Print Cf.get (" Portal "," url ")   print" Use Sateconfigparser () write "Cf.set (" Portal "," url2 ","% (host) s: % (port) S ") Print Cf.get (" Portal "," Url2 ")

Get terminal output (effect same as Configparser):

Use Safeconfigparser () Read http://localhost:8080/Portal use Sateconfigparser () write localhost:8080

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