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####
##
## Take as input the layers of a multiplex, and provide as output a
## file where the n-th line contains the activity of the n-th node. We
## assume that nodes are numbered sequentially, starting from 0, with
## no gaps (i.e., missing nodes are treated as isolated nodes)
##
##
##
import sys
if len(sys.argv) < 2:
print "Usage: %s <layer1> [<layer2>...]" % sys.argv[0]
sys.exit(1)
node_activity = {}
max_N = -1
for layer in sys.argv[1:]:
active = []
with open(layer, "r") as lines:
for l in lines:
if l[0] == "#":
continue
s, d = [int(x) for x in l.strip(" \n").split(" ")[:2]]
active.extend([s,d])
if s > max_N:
max_N = s
if d > max_N:
max_N = d
active = set(active)
for n in active:
if n in node_activity:
node_activity[n] += 1
else:
node_activity[n] = 1
for n in range(max_N+1):
if n in node_activity:
print node_activity[n]
else:
print 0
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