text: from __future__ import print_function
  
  import pypugjs
  from pypugjs.ext.jinja import Compiler
  
  a = pypugjs.Parser(
      '''!!! 5
  html
      head: title Hello from flask
      body(attr="2" ba=2)
          if name
              h1(class="red") Hello
                  span #{ name }
              span.description #{ name|capitalize } is a great name!
          else
              h1 Hello World!'''
  )
  block = a.parse()
  compiler = Compiler(block)
  print(compiler.compile())
  # OUT: <!DOCTYPE html>
  # OUT: <html{{__pypugjs_attrs(terse=True)}}>
  # OUT:   <head{{__pypugjs_attrs(terse=True)}}>
  # OUT:     <title{{__pypugjs_attrs(terse=True)}}>Hello from flask
  # OUT:     </title>
  # OUT:   </head>
  # OUT:   <body{{__pypugjs_attrs(terse=True, attrs=[('attr',("2" ba=2))])}}>{% if  name %}
  # OUT:     <h1{{__pypugjs_attrs(terse=True, attrs=[('class', (("red")))])}}>Hello {{name|escape}}
  # OUT:     </h1><span{{__pypugjs_attrs(terse=True, attrs=[('class', (('description')))])}}>{{name|capitalize}}
  # is a great name!</span>{% else %}
  # OUT:     <h1{{__pypugjs_attrs(terse=True)}}>Hello World!
  # OUT:     </h1>{% endif %}
  # OUT:   </body>
  # OUT: </html>
  