Fix issue 10094, by narrowing down the test for PROXY environment variables. Ubuntu 10.10 introduced $UBUNTU_MENUPROXY into the default user environment, and that's what's tripping up the code.
Fix issue 10094, by narrowing down the test for PROXY environment variables.
Ubuntu 10.10 introduced $UBUNTU_MENUPROXY into the default user environment,
and that's what's tripping up the code.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator