bpo-37830: handle specific cases on FOR_ITER

[isidentical]

handle specific cases on FOR_ITER, more details at issue

https://bugs.python.org/issue37830

[isidentical]

Travis fails because of some irrelevant gdb dependicy thing

The following packages have unmet dependencies:
 gdb : Depends: libbabeltrace-ctf1 (>= 1.2.1) but it is not installable
       Depends: libbabeltrace1 (>= 1.2.1) but it is not installable
E: Unable to correct problems, you have held broken packages.
apt-get.diagnostics
apt-get install failed
The command "sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install gdb xvfb" failed and exited with 100 during .