The pycodestyle tool flagged the following issues, which are now fixed.
$ pycodestyle cpu_layout.py
cpu_layout.py:18:5: E722 do not use bare 'except'
cpu_layout.py:62:14: E231 missing whitespace after ','
Fixes: deb87e6777c0 ("usertools: use sysfs for CPU layout")
Fixes: c9208f1dc967 ("usertools: fix CPU layout with python 3")
Cc: stable@dpdk.org
Signed-off-by: Ciara Power <ciara.power@intel.com>