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Impactful Individual
Impactful Individual

Power BI Python Script Out of Memory Error When Truncating DataFrame



I'm encountering an out of memory error when trying to run a Python script within Power BI to manipulate a dataset. I aim to truncate a dataset to only the first 5 rows using a Python script step in the Power Query Editor. Here's the script I am using:


import pandas as pd

# 'dataset' holds the input data for this script
# Keep only the first 5 rows
dataset = dataset.head(5)




However, when I execute the script, I receive the following error message:

DataSource.Error: ADO.NET: Python script error.
pandas.errors.ParserError: Error tokenizing data. C error: out of memory
Message=Python script error.


The dataset is not particularly large, so it's puzzling why this memory issue arises. I've tried to ensure that my system has enough available memory and even filtered the dataset in Power Query before handing it off to Python, but to no avail.


Has anyone faced a similar issue or can offer insights into what might be going wrong? Any advice on how to troubleshoot this error would be greatly appreciated.


Thank you in advance for your help!

Community Support
Community Support

Hi @HamidBee 


I found something related to your problem and you can try the methods mentioned in it.


Error tokenizing data. C error: out of memory pandas python, large file csv - Stack Overflow



Nono Chen

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