python - Strategy for partitioning dask dataframes efficiently
Jun 20, 2017 · The documentation for Dask talks about repartioning to reduce overhead here. They however seem to indicate you need some knowledge of what your dataframe will look …
python - Reading an SQL query into a Dask DataFrame - Stack …
May 24, 2022 · However, passing a meta attribute to read_sql_query and setting head_rows=0 is completely ok as long as there's an efficient way to retrieve/create while dask-sql might work …
python - Why does Dask perform so slower while multiprocessing …
Sep 6, 2019 · 36 dask delayed 10.288054704666138s my cpu has 6 physical cores Question Why does Dask perform so slower while multiprocessing perform so much faster? Am I using …
pandas - Down-sampling with Dask - Python - Stack Overflow
Dec 1, 2023 · It worked normally for Python 3.13, but I got a warning that says: Dask dataframe query planning is disabled because dask-expr is not installed. UPDATE: With dask-expr the …
python - Default pip installation of Dask gives "ImportError: No …
Find the dask package suitable for your python version from the release history page of the pypi dask page. Go back to colab and remove dask completely !pip uninstall dask
dask - Make Pandas DataFrame apply () use all cores? - Stack …
Mar 19, 2019 · As of August 2017, Pandas DataFame.apply() is unfortunately still limited to working with a single core, meaning that a multi-core machine will waste the majority of its …
python - How should I get the shape of a dask dataframe ... - Stack ...
May 15, 2018 · How should I get the shape of a dask dataframe? Asked 7 years, 7 months ago Modified 1 year, 7 months ago Viewed 26k times
python - importing large CSV file using Dask - Stack Overflow
Jul 2, 2021 · I am importing a very large csv file ~680GB using Dask, however, the output is not what I expect. My aim is to select only some columns (6/50), and perhaps filter them (this I am …
python - Why is Dask slower than Pandas in computing the mean …
Jan 19, 2025 · I am learning Dask to make my Python projects more efficient and scalable. To understand its performance better, I wrote a script comparing the computation time of Pandas …
python - How to transform Dask.DataFrame to pd.DataFrame
Aug 18, 2016 · How can I transform my resulting dask.DataFrame into pandas.DataFrame (let's say I am done with heavy lifting, and just want to apply sklearn to my aggregate result)?