Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [error: attempt to use unversioned python, define %__python to /usr/bin/python2 or /usr/bin/python3 explicitly
]: [rpmbuild complains about python and exits]

Issue: rpmbuild requires usage of versioned python shebangs
Resolution: check python files and use versioned python shebangs