def download_methods():
logger = get_logger("io-performance.log")
start = time()
filepath = download_file("methods-new.bw2package")
logger.info("Downloading methods package: %.4g" % (time() - start))
start = time()
BW2Package.import_file(filepath)
logger.info("Importing methods package: %.4g" % (time() - start))
def __init__(self,
demand,
worst_case_method,
t0=None,
max_calc_number=1e4,
cutoff=0.001,
loop_cutoff=10,
group=False,
grouping_field="tempo_group",
log=False,
lca_object=None):
self.demand = demand
self.worst_case_method = worst_case_method
self.t0 = np.datetime64(
'now', dtype="datetime64[s]") if t0 is None else np.datetime64(
t0).astype("datetime64[s]")
self.max_calc_number = max_calc_number
self.cutoff_value = cutoff
self.loop_cutoff_value = loop_cutoff
self.log = get_logger("dynamic-lca.log") if log else FakeLog()
self.lca_object = lca_object
self.group = group
self.grouping_field = grouping_field
self.stat_for_keys = get_static_forest_keys() #return forest processes
self.loops = collections.Counter() #to count loops iterations
#return static db and create set where will be added nodes as traversed
all_databases = set.union(
*[Database(key[0]).find_graph_dependents() for key in self.demand])
self.static_databases = {
name
for name in all_databases if databases[name].get('static')
}
self.product_amount = collections.defaultdict(
int) #to check supply amount calculated for each product
self.nodes = set()
self.edges = set()
#take the biosphere flows that are in the CF used to add only them in the timeline
self._flows_in_CF = [
x[0] for x in Method(self.worst_case_method).load()
] + [('static_forest', 'C_biogenic')]