feat: export regions

.gitignore

@@ -12,3 +12,5 @@
 /uv.lock
 
 /.venv
+
+*.pyc

pyproject.toml

@@ -6,4 +6,5 @@ readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
     "orjson>=3.11.1",
+    "polars>=1.32.0",
 ]

utils/export_regions.py

@@ -0,0 +1,7 @@
+import polars as pl
+
+from hasher import salted_hash_userid
+
+pl.scan_parquet("regions.parquet").with_columns(
+    pl.col("user_id").map_elements(salted_hash_userid, return_dtype=pl.String)
+).collect().write_parquet("regions_pub.parquet")