error: command 'gcc' failed with exit status 1

Fix
=====
#sudo apt-get install python-dev

Error
=======
  Running setup.py install for greenlet
    building 'greenlet' extension
    gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c greenlet.c -o build/temp.linux-x86_64-2.7/greenlet.o
    In file included from greenlet.c:5:0:
    greenlet.h:8:20: fatal error: Python.h: No such file or directory
    compilation terminated.
    error: command 'gcc' failed with exit status 1
    Complete output from command /home/saju/neutron/.venv/bin/python -c "import setuptools, tokenize;__file__='/home/saju/neutron/.venv/build/greenlet/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-TlW9nj-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/saju/neutron/.venv/include/site/python2.7:
    running install

running build

running build_ext

building 'greenlet' extension

creating build

creating build/temp.linux-x86_64-2.7

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c greenlet.c -o build/temp.linux-x86_64-2.7/greenlet.o

In file included from greenlet.c:5:0:

greenlet.h:8:20: fatal error: Python.h: No such file or directory

compilation terminated.

error: command 'gcc' failed with exit status 1