On Mon, Feb 11, 2013 at 4:56 PM, Alessandro Dentella <san...@e-den.it> wrote: > thanks for the answer but this way I need to really import jmb while > imp.find_module doesn't really import it.
If you want to know whether the module 'jmb' exists, you can certainly do that by using pkgutil.iter_modules(). What you *can't* do -- in *any* version of Python as far as I know -- is tell for certain whether 'jmb.foo' exists, without first importing jmb. (Since until jmb is imported, there's no way to know what __path__ value it will end up with.) This is true for namespace packages in all versions of Python; the best that you can do is try to write code that does the same thing as the import system... but even then your code will be just guessing (and failing to guess correctly) in the case where a package's initialization involves altering its __path__ or if .pth files with dynamic code are involved. Similarly, for any module foo.bar.baz, foo.bar must be imported in order to know what path to use for checking for the existence of foo.bar.baz. _______________________________________________ Catalog-SIG mailing list Catalog-SIG@python.org http://mail.python.org/mailman/listinfo/catalog-sig
