R. David Murray added the comment:
install says this:
This installs the function _() in Python’s builtins namespace, based on
domain, localedir, and codeset which are passed to the function translation()
Unless I'm misunderstanding something, this means that the actual value of _ is
different depending on which domain, localedir, and codeset are in use. So if
my application allows the user to *change languages* at runtime, I need to
*change* what is bound to _. If my program has assigned a value to _, when
another part of the application changes the language, what is bound to _ in
other modules is not going to change. This is my understanding of why _ is put
in the global namespace.
Of course, I've only used gettext in one application (that did dynamic language
switching), so I could just have been doing it wrong...and I suppose there is
no reason (and some sense) why _ could not be a function that indirects to the
current language. Or is that the way it works now and I am just
misunderstanding the documentation?
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<http://bugs.python.org/issue18217>
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