install(names=None)
This method installs self.gettext() into the built-in namespace, binding it to _.
If the names parameter is given, it must be a sequence containing the names of functions you want to install in the builtins namespace in addition to _(). Supported names are 'gettext' (bound to self.gettext()), 'ngettext' (bound to self.ngettext()), 'lgettext' and 'lngettext'.
Note that this is only one way, albeit the most convenient way, to make the _() function available to your applicat