On Mon, May 20, 2013 at 9:43 PM, Jim Mooney <cybervigila...@gmail.com> wrote: > If I make a package called jimlib with __init__.py in it, and a > program called bark.py in it, and even put it in site packages, I > still have to import the program with import jimlib.bark > > But I noticed that the pygraphics package is in site packages, and has > media.py in it, and all I have to do with that is import media, > without qualifying it with pygraphics, as in import pygraphics.media > > Why don't I have to drill down for media.py as I do with jimlib?
It's using a .pth file named "pygraphics.pth", which should be in your Lib\site-packages directory on NT. The first and only line is "pygraphics". This subdirectory is added to sys.path. Specifically, in the setup.py for PyGraphics, it's using the "extra_path" argument: http://code.google.com/p/pygraphics/source/browse/trunk/setup.py#24 This argument is actually undocumented: http://bugs.python.org/issue901727 To document this a bit, here's a snippet from the distutils source: if len(self.extra_path) == 1: path_file = extra_dirs = self.extra_path[0] elif len(self.extra_path) == 2: (path_file, extra_dirs) = self.extra_path else: raise DistutilsOptionError, \ ("'extra_path' option must be a list, tuple, or " "comma-separated string with 1 or 2 elements") And the function that creates the file: def create_path_file (self): filename = os.path.join(self.install_libbase, self.path_file + ".pth") if self.install_path_file: self.execute(write_file, (filename, [self.extra_dirs]), "creating %s" % filename) else: self.warn("path file '%s' not created" % filename) _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
