Initial addition of Python scripts

sliplink.py

@@ -0,0 +1,28 @@
+#from slipnode import Slipnode
+
+class Sliplink(object):
+	def __init__(self, source, destination, label=None, length=0.0):
+		self.source = source
+		self.destination = destination
+		self.label = label
+		self.fixedLength = length
+		source.outgoingLinks += [self]
+		destination.incomingLinks += [self]
+
+	def degreeOfAssociation(self):
+		if self.fixedLength > 0 or not self.label:
+			return 100.0 - self.fixedLength
+		return self.label.degreeOfAssociation()
+
+	def intrinsicDegreeOfAssociation(self):
+		if self.fixedLength > 1:
+			return 100.0 - self.fixedLength
+		if self.label:
+			return 100.0 - self.label.intrinsicLinkLength
+		return 0.0
+
+	def spread_activation(self):
+		self.destination.buffer += self.intrinsicDegreeOfAssociation()
+
+	def points_at(self, other):
+		return self.destination == other