More fixes.

Author: dsevilla

addendum/mongo-utils/csv_to_mongo.py

@@ -44,6 +44,6 @@ def to_date(d: str) -> datetime | None:
         func_to_cols: list[Callable[[str], str|int|float|datetime|None]] = \
             list(map(lambda c: to_date if 'date' in c.lower() else to_numeric, columns))
 
-        coll.insert_many([{c: v for (c,v) in zip(columns,
-                                   [func(e) for (func,e) in zip(func_to_cols, row)])}
+        coll.insert_many([dict(zip(columns,
+                                   [func(e) for (func,e) in zip(func_to_cols, row)]))
                           for row in reader])

mongo/sesion3.ipynb

@@ -139,7 +139,7 @@
    },
    "outputs": [],
    "source": [
-    "client: MongoClient = MongoClient(db_hostname, 27017, compressors='zstd')\n",
+    "client: MongoClient = MongoClient(db_hostname, 27017, compressors='zstd,zlib')\n",
     "client"
    ]
   },