network_start_end = False
# go through station start/end date dict and get the overall start_end date
for key, (start, end) in station_start_end_dict.iteritems():
if not network_start_end:
network_start_end = [start, end]
continue
if start < network_start_end[0]:
network_start_end[0] = start
elif end > network_start_end[1]:
network_start_end[1] = end
# now add the network start/end date
net_inv.start_date = UTCDateTime(network_start_end[0])
net_inv.end_date = UTCDateTime(network_start_end[1])
# print(net_inv)
#add the network inventory to the complete and updated inventory
new_inv.networks.append(net_inv)
XML_file = join(XML_path_out, FDSNnetwork+'_updated.xml')
if exists(XML_file):
remove(XML_file)
# write the inventory into the default path
new_inv.write(path_or_file_object=XML_file, format='STATIONXML', validate=True)
# add it to ASDF file
