zero323 commented on a change in pull request #34227:
URL: https://github.com/apache/spark/pull/34227#discussion_r725404588
##########
File path: python/pyspark/pandas/namespace.py
##########
@@ -397,22 +400,24 @@ def read_csv(
if nrows is not None:
sdf = sdf.limit(nrows)
+ index_spark_column_names: List[str]
+ index_names: List[Label]
if index_col is not None:
if isinstance(index_col, (str, int)):
index_col = [index_col]
for col in index_col:
if col not in column_labels:
raise KeyError(col)
index_spark_column_names = [column_labels[col] for col in index_col]
- index_names = [(col,) for col in index_col] # type: List[Label]
+ index_names = [(col,) for col in index_col]
column_labels = OrderedDict(
(label, col) for label, col in column_labels.items() if label not
in index_col
)
else:
index_spark_column_names = []
index_names = []
- psdf = DataFrame(
+ psdf: DataFrame = DataFrame(
Review comment:
Is this really needed?
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