Test suite failure

Hello,

I'm writing to you to report a bug in "Running the Test Suite" http://docutils.sourceforge.net/README.html

When I execute in shell:


cd <archive_directory_path>/test
./alltests.py

It reports an syntax error:

bogon:docutils yixuanli$ cd test3
bogon:test3 yixuanli$ ./alltests.py
Traceback (most recent call last):
  File "./alltests.py", line 22, in <module>
    import DocutilsTestSupport              # must be imported before docutils
  File "/Users/yixuanli/Documents/MyDev/docutils/test3/DocutilsTestSupport.py", line 233
    print('\n%s\ninput:' % (self,), file=sys.stderr)
                                        ^
SyntaxError: invalid syntax


Then I check the version by

cd ../tools
./quicktest.py --version

It says:
bogon:tools yixuanli$ ./quicktest.py --version
quicktest.py (Docutils 0.13 [repository])

Since there are a lot of interactions among your python files, I dare not to change only one code. Could you please kindly help me about that?

Btw, I appreciate deeply your docutils!

Cheers,
Yixuan

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