remove unused functions

unwind/db.py

@@ -1,7 +1,6 @@
 import asyncio
 import contextlib
 import logging
-import re
 import threading
 from pathlib import Path
 from typing import Any, Iterable, Literal, Type, TypeVar
@@ -16,7 +15,6 @@ from .models import (
     Rating,
     User,
     asplain,
-    fields,
     fromplain,
     movies,
     optional_fields,
@@ -414,7 +412,7 @@ async def add_or_update_rating(rating: Rating) -> bool:
     return False
 
 
-def sql_escape(s: str, char="#"):
+def sql_escape(s: str, char: str = "#") -> str:
     return s.replace(char, 2 * char).replace("%", f"{char}%").replace("_", f"{char}_")
 
 
@@ -533,10 +531,6 @@ async def ratings_for_movie_ids(
     return tuple(dict(r._mapping) for r in rows)
 
 
-def sql_fields(tp: Type):
-    return (f"{tp._table}.{f.name}" for f in fields(tp))
-
-
 async def ratings_for_movies(
     movie_ids: Iterable[ULID], user_ids: Iterable[ULID] = []
 ) -> Iterable[Rating]:
@@ -626,24 +620,3 @@ async def find_movies(
         aggreg[rating.movie_id][1].append(rating)
 
     return aggreg.values()
-
-
-def bindparams(query: str, values: dict):
-    """Bind values to a query.
-
-    This is similar to what SQLAlchemy and Databases do, but it allows to
-    easily use the same placeholder in multiple places.
-    """
-    pump_vals = {}
-    pump_keys = {}
-
-    def pump(match):
-        key = match[1]
-        val = values[key]
-        pump_keys[key] = 1 + pump_keys.setdefault(key, 0)
-        pump_key = f"{key}_{pump_keys[key]}"
-        pump_vals[pump_key] = val
-        return f":{pump_key}"
-
-    pump_query = re.sub(r":(\w+)\b", pump, query)
-    return sa.text(pump_query).bindparams(**pump_vals)