从火花 dataframe 到 pandas dataframe

Question

I have a spark dataframe that I created it by this way:

tx_df = (spark
         .read
         .parquet("/data/file"))



tx_ecommerce = tx_df.filter(tx_df["POS_Cardholder_Presence"]=="ECommerce").show()

I try to convert tx_commerce to pandas dataframe. I tryed like this:

tx_ecommerce.toPandas()

But I got this error:

--------------------------------------------------------------------------- AttributeError Traceback (most recent call last) in ----> 1 tx_ecommerce.toPandas()

AttributeError: 'NoneType' object has no attribute 'toPandas'

Any help please to resolve this problem?

thanks

Answer 1

when you put.show() at the end, it is not a pyspark data frame anymore.

Remove it and it should work.

tx_ecommerce =tx_df.filter(tx_df["POS_Cardholder_Presence"]=="ECommerce")

tx_ecommerce.toPandas()