Correction to PR's comment

nominatim/tokenizer/sanitizers/kanji_utils.py

@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
+"""
+This is a file for a function that converts Kanji (Japanese) numerals to Arabic numerals.
+"""
+
+def convert_kanji_sequence_to_number(sequence: str) -> str:
+    """Converts Kanji numbers to Arabic numbers
+    """
+    kanji_map = {
+      '零': '0',
+      '一': '1',
+      '二': '2',
+      '三': '3',
+      '四': '4',
+      '五': '5',
+      '六': '6',
+      '七': '7',
+      '八': '8',
+      '九': '9'
+    }
+    converted = ''
+    current_number = ''
+    for char in sequence:
+        if char in kanji_map:
+            current_number += kanji_map[char]
+        else:
+            converted += current_number
+            current_number = ''
+            converted += char
+    converted += current_number
+    return converted

nominatim/tokenizer/sanitizers/tag_japanese.py

@@ -12,11 +12,12 @@ and quarter and neighbourhood with place.
 
 
 from typing import Callable
-from typing import List
+from typing import List, Optional
 
 from nominatim.tokenizer.sanitizers.base import ProcessInfo
 from nominatim.tokenizer.sanitizers.config import SanitizerConfig
 from nominatim.data.place_name import PlaceName
+from nominatim.tokenizer.sanitizers.kanji_utils import convert_kanji_sequence_to_number
 
 def create(_: SanitizerConfig) -> Callable[[ProcessInfo], None]:
 #def create(config: SanitizerConfig) -> Callable[[ProcessInfo],None]:
@@ -25,37 +26,10 @@ def create(_: SanitizerConfig) -> Callable[[ProcessInfo], None]:
     return tag_japanese
     #return tag_japanese(config)
 
-def convert_kanji_sequence_to_number(sequence: str) -> str:
-    """Converts Kanji numbers to Arabic numbers
-    """
-    kanji_map = {
-      '零': '0',
-      '一': '1',
-      '二': '2',
-      '三': '3',
-      '四': '4',
-      '五': '5',
-      '六': '6',
-      '七': '7',
-      '八': '8',
-      '九': '9'
-    }
-    converted = ''
-    current_number = ''
-    for char in sequence:
-        if char in kanji_map:
-            current_number += kanji_map[char]
-        else:
-            converted += current_number
-            current_number = ''
-            converted += char
-    converted += current_number
-    return converted
-
 def reconbine_housenumber(
     new_address: List[PlaceName],
-    tmp_housenumber: str | None,
-    tmp_blocknumber: str | None
+    tmp_housenumber: Optional[str],
+    tmp_blocknumber: Optional[str]
 ) -> List[PlaceName]:
     """ Recombine the tag of housenumber by using housenumber and blocknumber
     """
@@ -87,8 +61,8 @@ def reconbine_housenumber(
 
 def reconbine_place(
     new_address: List[PlaceName],
-    tmp_neighbourhood: str | None,
-    tmp_quarter: str | None
+    tmp_neighbourhood: Optional[str],
+    tmp_quarter: Optional[str]
 ) -> List[PlaceName]:
     """ Recombine the tag of place by using neighbourhood and quarter
     """