def __iter__(self):
""" Iterates over item attributes. """
attr = gv.firstattr(self.handle)
while gv.ok(attr):
yield gv.nameof(attr), \
decode_page(gv.getv(self.handle, attr))
attr = gv.nextattr(self.handle, attr)
def _iterattrs(self, handle=""):
""" Iterate over the attributes of a graph item.
If no handle attribute is given, iterates over the attributes
of the root graph
"""
if not handle:
handle = self.handle
attr = gv.firstattr(handle)
while gv.ok(attr):
yield gv.nameof(attr), decode_page(gv.getv(handle, attr))
attr = gv.nextattr(handle, attr)
def __getattr__(self, name):
""" Finds the named attribute, returns its value """
handle = self.__dict__['handle']
name = encode_page(name)
retval = gv.getv(handle, gv.findattr(handle, name))
# Needed mainly for dict() for work, getattribute excepts
# and so __iter__ is called. Non-gv attrs are not returned.
if not retval:
object.__getattribute__(self, name)
return decode_page(retval)