[issue20658] os.environ.clear() fails with empty keys (posix.unsetenv)

[daniel hahler]

daniel hahler added the comment:

> It would help to know if the key was set manually by apport, or if it comes from the real environment. The environment looks correct:

It comes from the real environment.

I wanted to use apport, but could not from the current shell, because of this bug.

I had then looked at the output of `env` in this shell, and it contained just "=" (IIRC, but an empty name/key for sure). This was in a tmux shell/pane, which I have closed already.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20658>
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