# Buggy code
def should_generate_classification_page(self, dirname, post_list, lang):
    """Only generates list of posts for classification if this function returns True."""
    short_destination = dirname + "/" + self.site.config["INDEX_FILE"]
    # If there is an index.html pending to be created from a page, do not generate the section page.
    # The section page would be useless anyways. (via Issue #2613)
    for post in self.site.timeline:
        if not self.site.config[
            "SHOW_UNTRANSLATED_POSTS"
        ] and not post.is_translation_available(lang):
            continue
        if post.destination_path(lang, sep="/") == short_destination:
            return False
    return True


# Traceback (KeyError)
########################################
TaskError - taskid:render_galleries:output/galleries/index.html
PythonAction Error
Traceback (most recent call last):
File "/home/kwpolska/virtualenvs/nikola-py2/lib/python2.7/site-packages/doit/action.py", line 360, in execute
returned_value = self.py_callable(*self.args, **kwargs)
File "/home/kwpolska/git/nikola/nikola/plugins/task/galleries.py", line 466, in render_gallery_index
self.site.render_template(template_name, output_name, context)
File "/home/kwpolska/git/nikola/scripts/../nikola/nikola.py", line 607, in render_template
template_name, None, local_context)
File "/home/kwpolska/git/nikola/nikola/plugins/template/mako.py", line 88, in render_template
data = template.render_unicode(**context)
File "/home/kwpolska/virtualenvs/nikola-py2/lib/python2.7/site-packages/mako/template.py", line 452, in render_unicode
as_unicode=True)
File "/home/kwpolska/virtualenvs/nikola-py2/lib/python2.7/site-packages/mako/runtime.py", line 807, in _render
**_kwargs_for_callable(callable_, data))
File "/home/kwpolska/virtualenvs/nikola-py2/lib/python2.7/site-packages/mako/runtime.py", line 839, in _render_context
_exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
File "/home/kwpolska/virtualenvs/nikola-py2/lib/python2.7/site-packages/mako/runtime.py", line 865, in _exec_template
callable_(context, *args, **kwargs)
File "/home/kwpolska/Desktop/nikola-translated-path/cache/.mako.tmp/base.tmpl.py", line 91, in render_body
__M_writer(unicode(base.meta_translations()))
File "/home/kwpolska/Desktop/nikola-translated-path/cache/.mako.tmp/base_helper.tmpl.py", line 274, in render_meta_translations
__M_writer(unicode(_link(permalink, None, langname)))
File "/home/kwpolska/git/nikola/scripts/../nikola/nikola.py", line 765, in link
return self.path(*args, is_link=True)
File "/home/kwpolska/git/nikola/scripts/../nikola/nikola.py", line 729, in path
path = self.path_handlers[kind](name, lang)
KeyError: u'/galleries/galleries/index.html'

# Fixed code
def should_generate_classification_page(self, classification, post_list, lang):
    """Only generates list of posts for classification if this function returns True."""
    short_destination = classification + "/" + self.site.config["INDEX_FILE"]
    # If there is an index.html pending to be created from a page, do not generate the section page.
    # The section page would be useless anyways. (via Issue #2613)
    for post in self.site.timeline:
        if not self.site.config[
            "SHOW_UNTRANSLATED_POSTS"
        ] and not post.is_translation_available(lang):
            continue
        if post.destination_path(lang, sep="/") == short_destination:
            return False
    return True