Merge pull request #1 from plijtmaer/lab-02-ejemplo

Fix CSV  UTF-8 BOM

Author: maxflorentin

scripts/load_postgres.py

@@ -15,19 +15,24 @@ def run_sql(cur, path):
 
 
 def load_csv(cur, table, path, transform=None):
-    with open(path, encoding="utf-8") as f:
+    with open(path, encoding="utf-8-sig", newline="") as f:
         rows = list(csv.DictReader(f))
+
     if transform:
         rows = [transform(r) for r in rows]
+
     if not rows:
         return 0
+
     cols = list(rows[0].keys())
     values = [[r[c] or None for c in cols] for r in rows]
+
     execute_values(
         cur,
         f"INSERT INTO {table} ({','.join(cols)}) VALUES %s ON CONFLICT DO NOTHING",
         values,
     )
+
     return len(rows)