kolla-build: Wrap tpl_dict.keys() in a list()
In python 3, tpl_dict.keys() returns a dict_keys object that does not
support indexing and is then indexed.
Wrap tpl_dict.keys() in a list() so it can be be indexed in python 2 and
3.
Change-Id: I17e3bbfc4eeba58e4bdd7fdd1ecdb21baa5c4461
Closes-Bug: 1778781
(cherry picked from commit 96ca4c2f2c
)
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@ -766,7 +766,7 @@ class KollaWorker(object):
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template = env.get_template(tpl_path)
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if self.conf.template_override:
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tpl_dict = self._merge_overrides(self.conf.template_override)
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template_name = os.path.basename(tpl_dict.keys()[0])
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template_name = os.path.basename(list(tpl_dict.keys())[0])
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values['parent_template'] = template
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env = jinja2.Environment( # nosec: not used to render HTML
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loader=jinja2.DictLoader(tpl_dict))
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