fixed py3 dict-keys to list
@@ -531,7 +531,7 @@ class Options(object):
if own_ref.name != package_pattern and fnmatch.fnmatch(own_ref.name, package_pattern):
option_values.update(package_option_values)
# These are pattern options, shouldn't rais if not existing
- pattern_options = option_values.keys()
+ pattern_options = list(option_values.keys())
# Now, update with the exact match, that has higher priority
down_options = down_package_values.get(own_ref.name)
if down_options is not None:
