Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/18378#discussion_r123499500 --- Diff: python/pyspark/sql/dataframe.py --- @@ -1721,7 +1721,18 @@ def toPandas(self): 1 5 Bob """ import pandas as pd - return pd.DataFrame.from_records(self.collect(), columns=self.columns) + + dtype = {} + for field in self.schema: + pandas_type = _to_corrected_pandas_type(field.dataType) + if pandas_type is not None: + dtype[field.name] = pandas_type + + pdf = pd.DataFrame.from_records(self.collect(), columns=self.columns) + + for f, t in dtype.items(): + pdf[f] = pdf[f].astype(t, copy=False) --- End diff -- thanks for the investigation! maybe we should specify the version requirement for pandas
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