git doesn't update modify date?

graphdraw.py


pluggable methods?
for the following:

UndirectedGraph
DirectedGraph

WeightedUndirectedGraph or is it
UndirectedWeightedGraph

WeightedDirectedGraph
DirectedWeightedGraph

tree / heap
positioning: 
get the height of the tree:
max number of leaves on the last level: 2^(h-1)

Linked list?

Draw()
Graph/edges
Arguments: size


DSA update:
raise errors: specific indexerror
len() should always return count
alias to count()
is_empty() 
capacity() returns the capacity
to_list() or to_array()? -- use list, since it's specific to Python
@classmethod?
from_list() or from_array()? - insert contents into structure
__getitem__()
__setitem__()
repr()


weight table:
for node in nodes:
 weight[node] = infinity
 
 

