Re: [Python-Dev] PEP 420 - dynamic path computation is missing rationale

22 May 2012


      Minor nit.

On May 22, 2012, at 04:43 PM, PJ Eby wrote:
...
def declare_namespace(package_name):
    parent, dot, tail = package_name.rpartition('.')
    attr = '__path__'
    if dot:
       declare_namespace(parent)
    else:
       parent, attr = 'sys', 'path'
    with importlockcontext:
         module = sys.modules.get(package_name)
Best to use a marker object here instead of checking for None, since the
latter is a valid value for an existing entry in sys.modules.
...
if module is None:
             module = XXX new module here
         module.__path__ = _NamespacePath(...stuff involving 'parent' and
'attr')
Cheers,
-Barry

Re: [Python-Dev] PEP 420 - dynamic path computation is missing rationale

Barry Warsaw