Python language: Custom-Syntax string template (template) detailed

String. Template () adds the substituted character, uses the "$" symbol, or within the string, uses "${}"; Use the String.substitute (dict) function when calling.

Can be inherited by "string." Template ", covering variable delimiter (delimiters) and Idpattern (alternate format), customizing different forms of templates.

Code:

#-*-Coding:utf-8-*-  
      
' 
Created 
     
on 2014.6.5 @author: Administrator 
     
@edition: Python 3.3.0, eclipse Pydev 
' '
      
      
      
import string  
      
template_text = ' ' 
    Delimiter:% 
    Replaced:%with_underscore 
    ingored:%notunderscored 
'
      
d = {' With_underscore ': ' Replaced ',  
     ' notunderscored ': ' Not replaced '}< C14/>class MyTemplate (String. Template):  
    delimiter = '% '
    idpattern = ' [a-z]+_[a-z]+ '
          
t = MyTemplate (template_text)  
print (' Modified ID pattern: ')  
print (T.safe_substitute (d))

Output:

Modified ID pattern:   
      
    Delimiter:%  
    replaced:replaced  
    ingored:%notunderscored

Note: The delimiter (delimiter) is "%" and the replacement mode (Idpattern) must contain an underscore, so the 2nd is not replaced.

Author: csdn Blog spike_king

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