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XSLT template does not apply to all elements using lxml

I am confused about using XSLT templates and when / how they apply. Suppose I have the following XML file:

<book>
  <chapter> 1 </chapter>
  <chapter> 2 </chapter>
</book>

and I would like to fit all the chapters in order. This is the XSLT stylesheet:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
  <xsl:template match="book">                                                     
    <h1>book</h1>                                                               
  </xsl:template>                                                                 
  <xsl:template match="chapter">                                                  
    <h2>chapter <xsl:value-of select="."/></h2>                                   
  </xsl:template>                                                                                                                                                 
</xsl:stylesheet>

Style Sheet Result

<h1>book</h1>

without the expected numbering of chapters. Adding a <xsl:apply-templates />matching pattern at the end bookdid not help. I would like to do without xls:for-each.

EDIT I should have mentioned this: I am using the Python lxml module , which uses libxml2 and libxslt . The following code does not produce the expected result, but instead:

import lxml.etree
xml = lxml.etree.XML("""                                                    
    <book>                                                                          
      <chapter> 1 </chapter>                                                        
      <chapter> 2 </chapter>                                                        
    </book>                                                                         
""")                                                                            
transform = lxml.etree.XSLT( lxml.etree.XML("""                                  
    <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
      <xsl:template match="book">                                                   
        <h1>book</h1>                                                               
        <xsl:apply-templates  />                                                    
      </xsl:template>                                                               
      <xsl:template match="chapter">                                                
        <h2>chapter <xsl:value-of select="."/></h2>                                 
      </xsl:template>                                                               
    </xsl:stylesheet>                                                               
""") )                                                                                                                                                      
html = transform(xml)                                                            
print( lxml.etree.tostring(html, pretty_print=True) )

, () . libxslt Python lxml:

import libxml2                                                                  
import libxslt  

doc = libxml2.parseDoc("""                                                  
<book>                                                                      
  <chapter> 1 </chapter>                                                    
  <chapter> 2 </chapter>                                                    
</book>                                                                     
""")                                                                        

styledoc = libxml2.parseDoc("""                                             
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
  <xsl:template match="book">                                               
    <h1>book</h1>                                                           
    <xsl:apply-templates  />                                                
  </xsl:template>                                                           
  <xsl:template match="chapter">                                            
    <h2>chapter <xsl:value-of select="."/></h2>                             
  </xsl:template>                                                           
</xsl:stylesheet>                                                           
""")                                                                            
style = libxslt.parseStylesheetDoc(styledoc)                                

print( style.applyStylesheet(doc, None) )

?

+4
2

- , . , lxml XSLT, .

, lxml.etree.tostring() , , HTML XML, . :

<?xml version="1.0"?>
<h1>book</h1>                                                                          
      <h2>chapter  1 </h2>                                                        
      <h2>chapter  2 </h2>

, , (, ) . , , XHTML - XML , XML ( ).

, . , print .

import lxml.etree
xml = lxml.etree.XML("""                                                    
    <book>                                                                          
      <chapter> 1 </chapter>                                                        
      <chapter> 2 </chapter>                                                        
    </book>                                                                         
""")                                                                            
transform = lxml.etree.XSLT( lxml.etree.XML("""                                  
    <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >

      <xsl:template match="book">                                                   
        <h1>book</h1>                                                               
        <xsl:apply-templates />                                                    
      </xsl:template>                                                               
      <xsl:template match="chapter">                                                
        <h2>chapter <xsl:value-of select="."/></h2>                                 
      </xsl:template>                                                               
    </xsl:stylesheet>                                                               
""") )                                                                                                                                                      
html = transform(xml)                                                            
print(html)


<?xml version="1.0"?>
<h1>book</h1>                                                                          
      <h2>chapter  1 </h2>                                                        
      <h2>chapter  2 </h2>
[EMPTY OUPUT LINE]      
[EMPTY OUPUT LINE]

, :

  • libxml2 libxslt ,
  • XSLT , tostring() XML.

lxml 3.4.1, Python sys.version - 2.7.5, Mac OS X.

+4

, <xsl:apply-templates/> . XML. :

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:output method="xml" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="book">
    <root>
        <h1>book</h1>
        <xsl:apply-templates/>
    </root>
</xsl:template>
<xsl:template match="chapter">
    <h2>chapter <xsl:value-of select="."/>
    </h2>
</xsl:template>
</xsl:stylesheet>

:

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <h1>book</h1>
    <h2>chapter  1 </h2>
    <h2>chapter  2 </h2>
</root>
0

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