message: install_pip_packages.sh: 'pep8' is now 'pycodestyle'
  As discussed at
diff: @@ -97,9 +97,9 @@ pip3 install py-cpuinfo
  pip2 install pylint==1.6.4
  pip3 install pylint==1.6.4
  -# pep8 tests require the following:
  -pip2 install pep8
  -pip3 install pep8
  +# pycodestyle tests require the following:
  +pip2 install pycodestyle
  +pip3 install pycodestyle
  # tf.mock require the following for python2:
  pip2 install mock
  