fix ruff

assume/units/exchanges.py

@@ -13,7 +13,7 @@
 
 class Exchanges(SupportsMinMax):
     """
-    An exchanges unit.
+    An exchanges unit represents a unit that can import or export energy.
 
     Attributes:
         id (str): The unique identifier of the unit.

examples/examples.py

@@ -19,9 +19,9 @@
     # small examples for easier understanding of different features and configurations
     "small": {"scenario": "example_01a", "study_case": "base"},
     "small_with_exchanges": {
-        "scenario": "example_01a", 
-        "study_case": "base_with_exchanges"
-        },
+        "scenario": "example_01a",
+        "study_case": "base_with_exchanges",
+    },
     "small_dam": {"scenario": "example_01a", "study_case": "dam"},
     "small_with_opt_clearing": {
         "scenario": "example_01a",

examples/inputs/example_01a/config.yaml

@@ -49,7 +49,7 @@ base_with_exchanges:
       minimum_bid_price: -500
       price_unit: EUR/MWh
       market_mechanism: pay_as_clear
-      
+
 tiny:
   start_date: 2019-01-01 00:00
   end_date: 2019-01-02 00:00

examples/inputs/example_01a/exchanges_df.csv.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: ASSUME Developers
+
+SPDX-License-Identifier: AGPL-3.0-or-later

examples/inputs/example_03/exchanges_df.csv.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: ASSUME Developers
+
+SPDX-License-Identifier: AGPL-3.0-or-later

examples/inputs/example_03/exchanges_units.csv

@@ -1,19 +1,19 @@
 name,technology,direction,bidding_EOM,max_power,min_power,price,unit_operator
-export_DE_NL,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_NL_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_CH,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_CH_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_DK,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_DK_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_CZ,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_CZ_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_LU,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_LU_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_SE,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_SE_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_AT,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_AT_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_FR,n/a,export,naive_eom,1000000,0,2999,eom_de	
-import_FR_DE,n/a,import,naive_eom,1000000,0,0,eom_de	
-export_DE_PL,n/a,export,naive_eom,1000000,0,2999,eom_de	
+export_DE_NL,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_NL_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_CH,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_CH_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_DK,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_DK_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_CZ,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_CZ_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_LU,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_LU_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_SE,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_SE_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_AT,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_AT_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_FR,n/a,export,naive_eom,1000000,0,2999,eom_de
+import_FR_DE,n/a,import,naive_eom,1000000,0,0,eom_de
+export_DE_PL,n/a,export,naive_eom,1000000,0,2999,eom_de
 import_PL_DE,n/a,import,naive_eom,1000000,0,0,eom_de