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FT contributions: fix multiple exchanges from same key #1586

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Merged
merged 1 commit into from
Oct 16, 2025
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FT contributions: fix multiple exchanges from same key #1586

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9 changes: 7 additions & 2 deletions activity_browser/layouts/tabs/LCA_results_tabs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1430,7 +1430,9 @@ def get_default_demands() -> dict:

amounts = [exch.amount * scale for exch in technosphere if
exch.input.key != exch.output.key]
demands = {keys[i]: amounts[i] for i, _ in enumerate(keys)}
demands = {}
for key, amount in zip(keys, amounts):
demands[key] = demands.get(key, 0) + amount
return demands

def get_scenario_demands() -> dict:
Expand All @@ -1452,7 +1454,10 @@ def get_scenario_demands() -> dict:
amounts.append(_lca.technosphere_matrix[exch_idx, demand_idx] * scale)

# write al non-zero exchanges to demand dict
demands = {keys[i]: amounts[i] for i, _ in enumerate(keys) if amounts[i] != 0}
demands = {}
for key, amount in zip(keys, amounts):
if amount != 0:
demands[key] = demands.get(key, 0) + amount
return demands

# reuse LCA object from original calculation to skip 1 LCA
Expand Down