Allow custom output path for write_lci_matching

bw2io/export/excel.py

@@ -1,3 +1,5 @@
+from pathlib import Path
+from typing import Optional, List
 import collections
 import numbers
 import os
@@ -287,7 +289,7 @@ def write_lci_excel(database_name, objs=None, sections=None, dirpath=None):
 
 
 def write_lci_matching(
-    db, database_name, only_unlinked=False, only_activity_names=False
+    db: List[dict], database_name: str, only_unlinked: bool=False, only_activity_names: bool=False, output_dir: Optional[Path] = None
 ):
     """
     Write matched and unmatched exchanges to Excel file
@@ -353,10 +355,9 @@ def write_row(sheet, row, data, exc=True):
         )
 
     safe_name = safe_filename(database_name, False)
-    suffix = "-unlinked" if only_unlinked else "-names" if only_activity_names else ""
-    filepath = os.path.join(
-        projects.output_dir, "db-matching-" + safe_name + suffix + ".xlsx"
-    )
+    suffix = "-unlinked" if only_unlinked else ("-names" if only_activity_names else "")
+
+    filepath = Path(output_dir or projects.output_dir) / f"db-matching-{safe_name}{suffix}.xlsx"
 
     workbook = xlsxwriter.Workbook(filepath)
     bold = workbook.add_format({"bold": True})