python 3.12 discovered syntax issues

parsers/logbooks.py

@@ -326,7 +326,7 @@ def parser_date(tripdate, year):
 
 
 def parser_html(year, expedition, txt, seq=""):
-    """This uses some of the more obscure capabilities of regular expressions,
+    r"""This uses some of the more obscure capabilities of regular expressions,
     see https://docs.python.org/3/library/re.html
     
     e.g.

parsers/people.py

@@ -68,13 +68,13 @@ def troggle_slugify(longname):
     This function copied intact to expoweb/scripts/make-folklist.py
     """
     slug = longname.strip().lower().replace(" ","-")
-    slug = re.sub('\([^\)]*\)','',slug) # remove nickname in brackets
+    slug = re.sub(r'\([^\)]*\)','',slug) # remove nickname in brackets
     slug = slug.replace('é', 'e') 
     slug = slug.replace('á', 'a') 
     slug = slug.replace('ä', 'a') 
     slug = slug.replace('&', '') # otherwise just remove the &
     slug = slug.replace(';', '') # otherwise just remove the ;
-    slug = re.sub('<[^>]*>','',slug) # remove <span-lang = "hu">
+    slug = re.sub(r'<[^>]*>','',slug) # remove <span-lang = "hu">
 
     if len(slug) > 40: # slugfield is 50 chars
         slug = slug[:40]

parsers/survex.py

@@ -2428,9 +2428,9 @@ def FindAndLoadSurvex():
         ff = survexblock.survexfile
         if comment:
             # print(f"FIX {survexblock} {altitude} {comment}")
-            if re.match("(?i)[^s]*srtm[\s\S]*", comment.lower()):
+            if re.match(r"(?i)[^s]*srtm[\s\S]*", comment.lower()):
                 print(f"SRTM {ff}.svx::{survexblock} - {spath}.svx - alt={altitude} '{comment}'")
-            if re.match("(?i)[^s]*radost[\s\S]*", comment.lower()):
+            if re.match(r"(?i)[^s]*radost[\s\S]*", comment.lower()):
                 print(f"RDST {ff}.svx::{survexblock} - {spath}.svx - alt={altitude} '{comment}'")
         
     svx_load = None