test/test.py fails with "AssertionError: Python 3.3 or later is required for proper operation."

/usr/bin/python test/test.py --retry-count 5 --features .* --skip-known-failures --server cpp,c_glib,cl,d,java,csharp,py,,rb,hs,perl,php,go,nodejs,dart,erl,lua,rs,netstd,nodets
Traceback (most recent call last):
  File "test/test.py", line 45, in <module>
    assert (cur_version >= req_version), "Python 3.3 or later is required for proper operation."
AssertionError: Python 3.3 or later is required for proper operation.
Makefile:1129: recipe for target 'crossfeature' failed
make: *** [crossfeature] Error 1