gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.6 -c psutil/_psutil_linux.c -o build/temp.linux-x86_64-2.6/psutil/_psutil_linux.o

psutil/_psutil_linux.c:11:20: fatal error: Python.h: No such file or directory

compilation terminated.

error: command 'gcc' failed with exit status 1

----------------------------------------
Command /usr/bin/python -c "import setuptools; __file__='/usr/bin/build/psutil/setup.py'; execfile('/usr/bin/build/psutil/setup.py')" install --single-version-externally-managed --record /tmp/pip-7YsF8E-record/install-record.txt failed with error code 1
Storing complete log in /root/.pip/pip.log
zsh: exit 1     pip install glances
11:14 root@simply-informatique /usr/bin # glances
Traceback (most recent call last):
  File "/usr/local/bin/glances", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 2671, in <module>
    working_set.require(__requires__)
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 654, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 552, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: psutil>=0.4.1
zsh: exit 1     glances
11:14 root@simply-informatique /usr/bin #