Update third_party/psutil and fix the licence issue with it.

third_party/psutil/psutil/_compat.py

+#!/usr/bin/env python
+#
+# $Id: _compat.py 1142 2011-10-05 18:45:49Z g.rodola $
+#
+# Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Module which provides compatibility with older Python versions."""
+
+__all__ = ["namedtuple", "property"]
+
+from operator import itemgetter as _itemgetter
+from keyword import iskeyword as _iskeyword
+import sys as _sys
+import __builtin__
+
+try:
+    from collections import namedtuple
+except ImportError:
+    def namedtuple(typename, field_names, verbose=False, rename=False):
+        """A collections.namedtuple implementation written in Python
+        to support Python versions < 2.6.
+
+        Taken from: http://code.activestate.com/recipes/500261/
+        """
+        # Parse and validate the field names.  Validation serves two
+        # purposes, generating informative error messages and preventing
+        # template injection attacks.
+        if isinstance(field_names, basestring):
+             # names separated by whitespace and/or commas
+            field_names = field_names.replace(',', ' ').split()
+        field_names = tuple(map(str, field_names))
+        if rename:
+            names = list(field_names)
+            seen = set()
+            for i, name in enumerate(names):
+                if (not min(c.isalnum() or c=='_' for c in name) or _iskeyword(name)
+                    or not name or name[0].isdigit() or name.startswith('_')
+                    or name in seen):
+                        names[i] = '_%d' % i
+                seen.add(name)
+            field_names = tuple(names)
+        for name in (typename,) + field_names:
+            if not min(c.isalnum() or c=='_' for c in name):
+                raise ValueError('Type names and field names can only contain ' \
+                                 'alphanumeric characters and underscores: %r'
+                                 % name)
+            if _iskeyword(name):
+                raise ValueError('Type names and field names cannot be a keyword: %r' \
+                                 % name)
+            if name[0].isdigit():
+                raise ValueError('Type names and field names cannot start with a ' \
+                                 'number: %r' % name)
+        seen_names = set()
+        for name in field_names:
+            if name.startswith('_') and not rename:
+                raise ValueError('Field names cannot start with an underscore: %r'
+                                 % name)
+            if name in seen_names:
+                raise ValueError('Encountered duplicate field name: %r' % name)
+            seen_names.add(name)
+
+        # Create and fill-in the class template
+        numfields = len(field_names)
+        # tuple repr without parens or quotes
+        argtxt = repr(field_names).replace("'", "")[1:-1]
+        reprtxt = ', '.join('%s=%%r' % name for name in field_names)
+        template = '''class %(typename)s(tuple):
+        '%(typename)s(%(argtxt)s)' \n
+        __slots__ = () \n
+        _fields = %(field_names)r \n
+        def __new__(_cls, %(argtxt)s):
+            return _tuple.__new__(_cls, (%(argtxt)s)) \n
+        @classmethod
+        def _make(cls, iterable, new=tuple.__new__, len=len):
+            'Make a new %(typename)s object from a sequence or iterable'
+            result = new(cls, iterable)
+            if len(result) != %(numfields)d:
+                raise TypeError('Expected %(numfields)d arguments, got %%d' %% len(result))
+            return result \n
+        def __repr__(self):
+            return '%(typename)s(%(reprtxt)s)' %% self \n
+        def _asdict(self):
+            'Return a new dict which maps field names to their values'
+            return dict(zip(self._fields, self)) \n
+        def _replace(_self, **kwds):
+            'Return a new %(typename)s object replacing specified fields with new values'
+            result = _self._make(map(kwds.pop, %(field_names)r, _self))
+            if kwds:
+                raise ValueError('Got unexpected field names: %%r' %% kwds.keys())
+            return result \n
+        def __getnewargs__(self):
+            return tuple(self) \n\n''' % locals()
+        for i, name in enumerate(field_names):
+            template += '        %s = _property(_itemgetter(%d))\n' % (name, i)
+        if verbose:
+            print template
+
+        # Execute the template string in a temporary namespace
+        namespace = dict(_itemgetter=_itemgetter, __name__='namedtuple_%s' % typename,
+                         _property=property, _tuple=tuple)
+        try:
+            exec template in namespace
+        except SyntaxError, e:
+            raise SyntaxError(e.message + ':\n' + template)
+        result = namespace[typename]
+
+        # For pickling to work, the __module__ variable needs to be set
+        # to the frame where the named tuple is created.  Bypass this
+        # step in enviroments where sys._getframe is not defined (Jython
+        # for example) or sys._getframe is not defined for arguments
+        # greater than 0 (IronPython).
+        try:
+            result.__module__ = _sys._getframe(1).f_globals.get('__name__', '__main__')
+        except (AttributeError, ValueError):
+            pass
+
+        return result
+
+
+# dirty hack to support property.setter on python < 2.6
+property = property
+
+if not hasattr(property, "setter"):
+
+    class property(property):
+
+        def __init__(self, fget, *args, **kwargs):
+            self.__doc__ = fget.__doc__
+            super(property, self).__init__(fget, *args, **kwargs)
+
+        def setter(self, fset):
+            cls_ns = _sys._getframe(1).f_locals
+            for k, v in cls_ns.iteritems():
+              if v == self:
+                  propname = k
+                  break
+            cls_ns[propname] = property(self.fget, fset,
+                                        self.fdel, self.__doc__)
+            return cls_ns[propname]
+
+        def deleter(self, fdel):
+            cls_ns = _sys._getframe(1).f_locals
+            for k, v in cls_ns.iteritems():
+              if v == self:
+                  propname = k
+                  break
+            cls_ns[propname] = property(self.fget, self.fset,
+                                        fdel, self.__doc__)
+            return cls_ns[propname]
+
+    __builtin__.property = property
+