def resolve_blocks(template, context):
    '''
    Return a BlockContext instance of all the {% block %} tags in the template.

    If template is a string, it will be resolved through get_template
    '''
    try:
        blocks = context.render_context[BLOCK_CONTEXT_KEY]
    except __HOLE__:
        blocks = context.render_context[BLOCK_CONTEXT_KEY] = BlockContext()

    # If it's just the name, resolve into template
    if isinstance(template, six.string_types):
        template = get_template(template)

    # For Django 1.8 compatibility
    template = getattr(template, 'template', template)

    # Add this templates blocks as the first
    local_blocks = dict(
        (block.name, block)
        for block in template.nodelist.get_nodes_by_type(BlockNode)
    )
    blocks.add_blocks(local_blocks)

    # Do we extend a parent template?
    extends = template.nodelist.get_nodes_by_type(ExtendsNode)
    if extends:
        # Can only have one extends in a template
        extends_node = extends[0]

        # Get the parent, and recurse
        parent_template = extends_node.get_parent(context)
        resolve_blocks(parent_template, context)

    return blocks
dataset/ETHPy150Open funkybob/django-sniplates/sniplates/templatetags/sniplates.py/resolve_blocks