def __init__(self):
'''
Constructor
'''
self.rnd = Random()
self.rnd_uniform = uniform()
self.net = Network()
out_eco = csv.DictWriter(file_eco, header_names)
###this is for python < 2.7
# headers_dict = dict()
# for n in header_names:
# headers_dict[n] = n
#
# out_eco.writerow(headers_dict)
### for python >= 2.7 comment the above block and uncomment the following line
out_eco.writeheader()
network_file = output_dir + '/' + SRC_NET_FILE
if READ_FILE_NETWORK:
graph = nx.read_graphml(network_file)
net = Network(graph)
print 'connectance = ', net.connectance()
tls = net.get_trophic_levels()
top, top_preds = net.top_predators()
basal, basal_sps = net.basal()
for u, v in net.edges():
if u in basal_sps and v in top_preds and tls[v] == 3:
net.remove_edge(u, v)
print 'new connectance = ', net.connectance()
else:
net = obtain_interactions_network()
net_to_save = net.copy()
