fix: fix pcs

planning_ai/documents/document.py

@@ -32,9 +32,9 @@ def _process_postcodes(final):
     postcodes = [doc["document"].metadata["respondentpostcode"] for doc in documents]
     missing = ["Missing" for pcd in postcodes if not pcd]
     postcodes = (
-        pl.DataFrame({"postcode": [postcodes for postcode in postcodes if postcode]})
-        .with_columns(pl.col("postcode").cast(str).str.replace_all(" ", ""))["postcode"]
+        pl.DataFrame({"postcode": postcodes})["postcode"]
         .value_counts()
+        .with_columns(pl.col("postcode").str.replace_all(" ", ""))
     )
     onspd = pl.read_parquet(
         Paths.RAW / "onspd_cambridge.parquet",