[Python-Dev] PEP 420 - dynamic path computation is missing rationale (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Tue May 22 17:41:46 CEST 2012

On Wed, May 23, 2012 at 1:39 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:

 def recalculate(self):  # If parentpath has changed, recalculate path  parentpath = tuple(self.parentpath())     # Retrieve and make a copy  if parentpath != self.lastparentpath:  loader, newpath = self.pathfinder(self.name, parentpath)  # Note that no changes are made if a loader is returned, but we  #  do remember the new parent path  if loader is None:  self.path = newpath  self.lastparentpath = parentpath   # Save the copy  return self.path

Oops, I also meant to say that it's probably worth at least issuing ImportWarning if a new portion with an init.py gets added - it's going to block all future dynamic updates of that namespace package.

Cheers, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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