ARGOMENTO:

cat /etc/sabayon-{release,edition}
Sabayon Linux amd64 18.05
Sabayon Linux 20170213 amd64 KDE Development

gcc -v
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/6.4.0/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/6.4.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-6.4.0-r1/work/gcc-6.4.0/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/6.4.0 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.4.0 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.4.0/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.4.0/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/include/g++-v6 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/6.4.0/python --enable-objc-gc --enable-languages=c,c++,go,objc,obj-c++,fortran --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --enable-nls --without-included-gettext --enable-checking=release --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened 6.4.0-r1 p1.3' --enable-esp --enable-libstdcxx-time --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64 --disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj --enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts --disable-libmpx --enable-vtable-verify --enable-libvtv --enable-lto --with-isl --disable-isl-version-check --enable-libsanitizer --enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 6.4.0 (Gentoo Hardened 6.4.0-r1 p1.3)

python --version
Python 3.5.5


 eselect python list
Available Python interpreters, in order of preference:
  [1]   python3.5
  [2]   python2.7
  [3]   python3.4
  [4]   python3.4

$  equo s --installed dev-lang/python -qv
dev-lang/python-2.7.14-r1
dev-lang/python-3.4.5
dev-lang/python-3.5.5
dev-lang/python-exec-2.4.5



dev-lang/python
     Available versions:  
     (2.7)  2.7.14-r1 ~2.7.14-r2
     (3.4)  3.4.5-r1(3.4/3.4m)^t (~)3.4.6-r1(3.4/3.4m) 3.4.8(3.4/3.4m) (~)3.4.8-r1(3.4/3.4m)
     (3.5)  3.5.4-r1(3.5/3.5m)^t 3.5.5(3.5/3.5m)^t (~)3.5.5-r1(3.5/3.5m)^t
     (3.6)  3.6.3-r1(3.6/3.6m)^t (~)3.6.4(3.6/3.6m)^t 3.6.5(3.6/3.6m)^t (~)3.6.5-r1(3.6/3.6m)^t
       {-berkdb bluetooth build doc examples gdbm hardened ipv6 libressl +ncurses +readline sqlite +ssl test +threads tk +wide-unicode wininst +xml ELIBC="uclibc"}
     Installed versions:  2.7.14-r1(2.7)(15:34:46 28/01/2018)(gdbm ipv6 ncurses readline sqlite ssl threads tk wide-unicode xml -berkdb -build -doc -examples -hardened -libressl -wininst ELIBC="-uclibc") 3.4.5(3.4/3.4m)(00:09:38 14/09/2017)(gdbm ipv6 ncurses readline sqlite ssl threads tk xml -build -examples -hardened -libressl -wininst ELIBC="-uclibc") 3.5.5(3.5/3.5m)^t(20:59:16 24/04/2018)(gdbm ipv6 ncurses readline sqlite ssl threads tk xml -build -examples -hardened -libressl -test -wininst ELIBC="-uclibc")
     Homepage:            https://www.python.org/
     Description:

# equo update && equo i sys-devel/gcc