parameters: (cls)
return_statement: return True_()
docstring: Return a constant :class:`.True_` construct.
  
          E.g.::
  
              >>> from sqlalchemy import true
              >>> print(select([t.c.x]).where(true()))
              SELECT x FROM t WHERE true
  
          A backend which does not support true/false constants will render as
          an expression against 1 or 0::
  
              >>> print(select([t.c.x]).where(true()))
              SELECT x FROM t WHERE 1 = 1
  
          The :func:`.true` and :func:`.false` constants also feature
          "short circuit" operation within an :func:`.and_` or :func:`.or_`
          conjunction::
  
              >>> print(select([t.c.x]).where(or_(t.c.x > 5, true())))
              SELECT x FROM t WHERE true
  
              >>> print(select([t.c.x]).where(and_(t.c.x > 5, false())))
              SELECT x FROM t WHERE false
  
          .. versionchanged:: 0.9 :func:`.true` and :func:`.false` feature
             better integrated behavior within conjunctions and on dialects
             that don't support true/false constants.
  
          .. seealso::
  
              :func:`.false`
docstring_summary: Return a constant :class:`.True_` construct.
docstring_tokens: Return a constant : class : . True_ construct .
function: def _instance(cls):
          """Return a constant :class:`.True_` construct.
  
          E.g.::
  
              >>> from sqlalchemy import true
              >>> print(select([t.c.x]).where(true()))
              SELECT x FROM t WHERE true
  
          A backend which does not support true/false constants will render as
          an expression against 1 or 0::
  
              >>> print(select([t.c.x]).where(true()))
              SELECT x FROM t WHERE 1 = 1
  
          The :func:`.true` and :func:`.false` constants also feature
          "short circuit" operation within an :func:`.and_` or :func:`.or_`
          conjunction::
  
              >>> print(select([t.c.x]).where(or_(t.c.x > 5, true())))
              SELECT x FROM t WHERE true
  
              >>> print(select([t.c.x]).where(and_(t.c.x > 5, false())))
              SELECT x FROM t WHERE false
  
          .. versionchanged:: 0.9 :func:`.true` and :func:`.false` feature
             better integrated behavior within conjunctions and on dialects
             that don't support true/false constants.
  
          .. seealso::
  
              :func:`.false`
  
          """
  
          return True_()
function_tokens: def _instance ( cls ) : return True_ ( )