golden hour

/usr/lib/python2.7/site-packages/jinja2

File/Folder	Size	Actions
__init__.py	2.22 KB
__init__.pyc	2.38 KB
__init__.pyo	2.38 KB
_compat.py	3.95 KB
_compat.pyc	5.99 KB
_compat.pyo	5.99 KB
_stringdefs.py	394.82 KB
_stringdefs.pyc	203.64 KB
_stringdefs.pyo	203.64 KB
bccache.py	12.04 KB
bccache.pyc	13.85 KB
bccache.pyo	13.85 KB
compiler.py	60.34 KB
compiler.pyc	53.21 KB
compiler.pyo	53.15 KB
constants.py	1.59 KB
constants.pyc	1.65 KB
constants.pyo	1.65 KB
debug.py	10.72 KB
debug.pyc	10.45 KB
debug.pyo	10.37 KB
defaults.py	1.03 KB
defaults.pyc	1.46 KB
defaults.pyo	1.46 KB
environment.py	46.14 KB
environment.pyc	45 KB
environment.pyo	44.59 KB
exceptions.py	4.32 KB
exceptions.pyc	6.11 KB
exceptions.pyo	6.11 KB
ext.py	24.49 KB
ext.pyc	23.5 KB
ext.pyo	23.43 KB
filters.py	29.14 KB
filters.pyc	33.13 KB
filters.pyo	33.13 KB
lexer.py	27.73 KB
lexer.pyc	22.11 KB
lexer.pyo	21.95 KB
loaders.py	16.64 KB
loaders.pyc	18.5 KB
loaders.pyo	18.5 KB
meta.py	4.09 KB
meta.pyc	3.92 KB
meta.pyo	3.92 KB
nodes.py	28.23 KB
nodes.pyc	41.54 KB
nodes.pyo	41.06 KB
optimizer.py	2.25 KB
optimizer.pyc	2.78 KB
optimizer.pyo	2.78 KB
parser.py	34.36 KB
parser.pyc	30.5 KB
parser.pyo	30.5 KB
runtime.py	19.1 KB
runtime.pyc	22.5 KB
runtime.pyo	22.46 KB
sandbox.py	18.09 KB
sandbox.pyc	17.23 KB
sandbox.pyo	17.23 KB
tests.py	3.36 KB
tests.pyc	4.93 KB
tests.pyo	4.93 KB
testsuite	-
utils.py	15.79 KB
utils.pyc	19.08 KB
utils.pyo	19.08 KB
visitor.py	3.24 KB
visitor.pyc	3.72 KB
visitor.pyo	3.72 KB

Edit: visitor.py

# -*- coding: utf-8 -*-
"""
    jinja2.visitor
    ~~~~~~~~~~~~~~

This module implements a visitor for the nodes.

:copyright: (c) 2010 by the Jinja Team.
    :license: BSD.
"""
from jinja2.nodes import Node

class NodeVisitor(object):
    """Walks the abstract syntax tree and call visitor functions for every
    node found.  The visitor functions may return values which will be
    forwarded by the `visit` method.

Per default the visitor functions for the nodes are ``'visit_'`` +
    class name of the node.  So a `TryFinally` node visit function would
    be `visit_TryFinally`.  This behavior can be changed by overriding
    the `get_visitor` function.  If no visitor function exists for a node
    (return value `None`) the `generic_visit` visitor is used instead.
    """

def get_visitor(self, node):
        """Return the visitor function for this node or `None` if no visitor
        exists for this node.  In that case the generic visit function is
        used instead.
        """
        method = 'visit_' + node.__class__.__name__
        return getattr(self, method, None)

def visit(self, node, *args, **kwargs):
        """Visit a node."""
        f = self.get_visitor(node)
        if f is not None:
            return f(node, *args, **kwargs)
        return self.generic_visit(node, *args, **kwargs)

def generic_visit(self, node, *args, **kwargs):
        """Called if no explicit visitor function exists for a node."""
        for node in node.iter_child_nodes():
            self.visit(node, *args, **kwargs)

class NodeTransformer(NodeVisitor):
    """Walks the abstract syntax tree and allows modifications of nodes.

The `NodeTransformer` will walk the AST and use the return value of the
    visitor functions to replace or remove the old node.  If the return
    value of the visitor function is `None` the node will be removed
    from the previous location otherwise it's replaced with the return
    value.  The return value may be the original node in which case no
    replacement takes place.
    """

def generic_visit(self, node, *args, **kwargs):
        for field, old_value in node.iter_fields():
            if isinstance(old_value, list):
                new_values = []
                for value in old_value:
                    if isinstance(value, Node):
                        value = self.visit(value, *args, **kwargs)
                        if value is None:
                            continue
                        elif not isinstance(value, Node):
                            new_values.extend(value)
                            continue
                    new_values.append(value)
                old_value[:] = new_values
            elif isinstance(old_value, Node):
                new_node = self.visit(old_value, *args, **kwargs)
                if new_node is None:
                    delattr(node, field)
                else:
                    setattr(node, field, new_node)
        return node

def visit_list(self, node, *args, **kwargs):
        """As transformers may return lists in some places this method
        can be used to enforce a list as return value.
        """
        rv = self.visit(node, *args, **kwargs)
        if not isinstance(rv, list):
            rv = [rv]
        return rv