These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.61 s (backtrack: 0/20).

[ebuild  NS    ] dev-lang/python-2.7.18_p16-r2:2.7::gentoo [3.13.12:3.13::gentoo, 3.14.3:3.14::gentoo] USE="gdbm ncurses readline sqlite ssl xml%* (-berkdb) -bluetooth -examples -valgrind -verify-sig -wininst% (-debug%) (-ensurepip%*) (-jit%) (-libedit%) (-pgo%*) (-tail-call-interp%) (-test%) (-tk%)" LLVM_SLOT="(-19%*)" 12589 KiB

Total: 1 package (1 in new slot), Size of downloads: 12589 KiB