## 4.8
degree = 0 ## gatherer for degree
node_interested = 'A'
for line in open('network.txt'):
line = line.strip()
line = line.split('-')
if line[0] == node_interested or line[1] == node_interested:
degree = degree + 1
print( 'Degree for', node_interested, 'is', degree )
Degree for A is 6
## 4.9
in_degree = 0 ## gatherer for degrees
out_degree = 0
node_interested = 'A'
for line in open('directed_network.txt'):
line = line.strip()
line = line.split('->')
if line[0] == node_interested:
out_degree = out_degree + 1
if line[1] == node_interested:
in_degree = in_degree + 1
print( 'Out degree for', node_interested, 'is', out_degree )
print( 'In degree for', node_interested, 'is', in_degree )
Out degree for A is 1 In degree for A is 5
## 4.10
## key observation: degree is actually the column sum on the matrix
degree = 0 ## gatherer
node_interested = 1 ## this is the index location of the colum we are interested in
for line in open('adjacency_matrix.txt'):
line = line.strip()
print( line )
line = line.split(',')
print( line[ node_interested - 1 ] )
degree = degree + float( line[ node_interested - 1 ] )
print( degree )
0,1,0,0 0 1,0,1,0 1 0,1,0,1 0 0,0,1,0 0 1.0