bump python version, ruff check

src/services/catalogue.py

@@ -48,8 +48,8 @@ class Catalogue:
         log.info(f"Searching for term: {searchterm}")
 
         links = self.get_book_links(searchterm)
-            # debug: links
-            # print(links)
+        # debug: links
+        # print(links)
         for elink in links:
             result = self.search(elink)
             # in result search for class col-xs-12 rds-dl RDS_LOCATION
@@ -167,16 +167,16 @@ class Catalogue:
         # based on PPN, get title, people, edition, year, language, pages, isbn,
         link = f"https://rds.ibs-bw.de/phfreiburg/opac/RDSIndexrecord/{ppn}"
         result = self.search(link)
-        soup = BeautifulSoup(result, "html.parser")
+        BeautifulSoup(result, "html.parser")
 
     def get_ppn(self, searchterm: str) -> str | None:
         links = self.get_book_links(searchterm)
         ppn = None
         for link in links:
             result = self.search(link)
-            soup = BeautifulSoup(result, "html.parser")
-                # debug: link
-                # print(link)
+            BeautifulSoup(result, "html.parser")
+            # debug: link
+            # print(link)
             ppn = link.split("/")[-1]
             if ppn and regex.match(r"^\d{8,10}[X\d]?$", ppn):
                 return ppn
@@ -268,8 +268,8 @@ class Catalogue:
 
                 # Find the signature for the entry whose location mentions "Semesterapparat"
                 for g in groups:
-                        # debug: group contents
-                        # print(g)
+                    # debug: group contents
+                    # print(g)
                     loc = g.get("location", "").lower()
                     if "semesterapparat" in loc:
                         signature = g.get("signature")