Valgrind test for Extending Python with C

I want to check memory leak in my C extending modules for Python3 with valgrind. I downloaded the valgrind suppression file (http://ift.tt/1TAc7Ne) and uncomment the lines for PyObject_Free and PyObject_Realloc in this file. Then I run valrgind test:

valgrind --tool=memcheck --suppressions=valgrind-python.supp \
                                      python3 -E -tt ./my_python_script.py

But, I get many errors if I even execute just "print('hello world')", e.g:

==13735== ERROR SUMMARY: 604 errors from 45 contexts (suppressed: 0 from 0)

What's wrong? Why so many errors? How can I check my apps?

$ uname -a
Linux mongo-r4 3.8.0-31-generic #46~precise1-Ubuntu SMP Wed Sep 11 18:21:16 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ valgrind --version
valgrind-3.10.0.SVN

$ python3 --version
Python 3.4.0

via Chebli Mohamed