docs[python]: Updating documentation on null_values in read_csv (#4565)

updating meaning of passing a list of string to read_csv and scan_csv
pola-rs · Aug 25, 2022 · 8fbee3d · 8fbee3d
1 parent 3b7e1be
commit 8fbee3d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/py-polars/polars/io.py b/py-polars/polars/io.py
@@ -137,7 +137,7 @@ def read_csv(
         Values to interpret as null values. You can provide a:
 
         - ``str``: All values equal to this string will be null.
-        - ``List[str]``: A null value per column.
+        - ``List[str]``: All values equal to any string in this list will be null.
         - ``Dict[str, str]``: A dictionary that maps column name to a
           null value string.
     ignore_errors
@@ -469,7 +469,7 @@ def scan_csv(
         Values to interpret as null values. You can provide a:
 
         - ``str``: All values equal to this string will be null.
-        - ``List[str]``: A null value per column.
+        - ``List[str]``: All values equal to any string in this list will be null.
         - ``Dict[str, str]``: A dictionary that maps column name to a
           null value string.
     ignore_errors