Join two modin.pandas.DataFrame(s)

I have attempted to join/merge/concat two modin.pandas DataFrames and failed. Has anyone been successful in performing this operation? This is the big data modin-project pandas implementation. The...

Cannot install RAY

Ray library from RISE lab (https://rise.cs.berkeley.edu/blog/pandas-on-ray/) I am using Windows 10 Pro, 64-bit and running these scripts from Anaconda prompt. I have tried both pip install ray...

Python pandas modin - no module found

I am using anaconda and just tried: pip install modin that finished without issue. Then created very simple python script and in it only have one line: import modin.pandas as pd Error that I...

unable to parse a column of json strings in modin dataframe (works in pandas)

I have a dataframe of json strings I want to convert to json objects. df.col.apply(json.loads) works fine for pandas, but fails when using modin dataframes. example: import pandas import...

Comparison between Modin | Dask | Data.table | Pandas for parallel processing and out of memory csv files

What are the fundamental difference and primary use-cases for Dask | Modin | Data.table I checked the documentation of each libraries, all of them seem to offer a 'similar' solution to pandas limitations

How to append a Modin pandas dataframe to other?

I am working on performing calculations on large files around 6GB each file and came across Modin pandas which I heard optimized compared to pandas. I need to read a CSV file in chunks and perform...

Modin read_csv issue

I'm attempting to read a csv file using modin and it results in the following error. this issue seems to happen on all dataframe operations: RayWorkerError: The worker died unexpectedly while...

How to apply groupby and transpose in Pyspark?

I have a dataframe like as shown below df = pd.DataFrame({ 'subject_id':[1,1,1,1,2,2,2,2,3,3,4,4,4,4,4], 'readings' :...

Unable to fully install and import Modin Package

I am trying to use the modin package to speed up my pandas dataframe calculations. In short, the installation has not been as straightforward as pip install modin When simply running pip install...

merging two pandas data frames with modin.pandas gives ValueError

In an attempt to make my pandas code faster I installed modin and tried to use it. A merge of two data frames that had previously worked gave me the following error: ValueError: can not merge...

Modin library throws errors while doing simple pandas operation

I came across modin library that is supposed to accelerate some pandas operation and started to test it. While loading data with read_csv is significantly faster, simple conditional expressions...

I am getting error while running Modin pandas to speed up my pandas capability.How to resolve this issue?

### Read in the data with Modin import modin.pandas as pd s = time.time() df = pd.read_csv("train.csv") e = time.time() print("Modin Loading Time = {}".format(e-s)) ImportError: Please `pip...

Faster pandas apply using modin.pandas

Trying to use all cores for this apply function using modin.pandas from nltk.sentiment.vader import SentimentIntensityAnalyzer sid = SentimentIntensityAnalyzer() # sentiment Score of essay data =...

Modin Pandas and Dask Does nothing but hang

I am trying to decipher why this is just hanging with modin and works fine with regular pandas: import modin.pandas as pd infile1 = 'D:\\test_files\\curves_crosstab.csv' infile2 =...

ModuleNotFoundError for 'modin' even though it is installed by poetry

On import modin.pandas as modin_pd line I get ModuleNotFoundError: No module named 'modin'. I am using poetry & JupyterLab. If in the cell I type !poetry add modin, I get ValueError saying Package...

Cant fit dataframe with fbprophet using dask to read the csv into a dataframe

References: https://examples.dask.org/applications/forecasting-with-prophet.html?highlight=prophet https://facebook.github.io/prophet/ A few things to note: I've got a total of 48gb of...

ERROR: No matching distribution found for pandas==1.0.3 (from modin)

I'm trying to speed up my code using parallel processing with the modin library. I tried to do it with the dask engine on my Windows 10 computer but it didn't work, I thought that it is because it...

Installing cartopy from pip exits with various errors on Linux Ubuntu 18.04

The shell command pip install cartopy led to several errors. At first, the following error occurred: ERROR: Command errored out with exit status 1: command:...

how to load modin dataframe from pyarrow or pandas

Since Modin does not support loading from multiple pyarrow files on s3, I am using pyarrow to load the data. import s3fs import modin.pandas as pd from pyarrow import parquet s3...

pd.read_sav and pyreadstat are so slow. how can i speed up pandas for big data if i have to use SAV/SPSS file format?

I've been transitioning away from SPSS for syntax writing/data management where I work to python and pandas for higher levels of functionality and programming. The issue is, reading SPSS files...

Does Modin speedup Pandas Apply function?

I have tried to find answer in many places, but never got direct answer yet. Does modin Speedup apply on Dataframes? Is it having intelligency to parallerize apply function across Dataframe rather...

Unable to connect to Redis when running modin.pandas from PyCharm

After installing modin on my Windows machine (pip install modin[ray]), I can run simple examples on a jupyter notebook, but it fails when running from PyCharm. I get an exception: Unable to...

Failed to install swifter via pip - INFO: pip is looking at multiple versions .. compatible with other requirements

Within my virtual python 3.9x - environment on my Lubuntu 20.04 - System, I tried to install swifter via command line using pip install swifter. This doesn't work out however, as the compatibility...

Pandas string subscripting does not work in modin (and related questions about converting pandas code to modin)

I recently learned about modin, and am trying to convert some of my code from pandas to modin. My understanding is that modin has some operations that run faster and others that it has not...

str[0:z] works with pandas but not with modin: TypeError: 'StringMethods' object is not subscriptable

I'm running Spyder on Python 3.7 and am new to modin. I want to retrieve the first characters in a string and save to a new column. When I run the usual with pandas it works: import pandas as...

Modin is taking more time than pandas for reading CSV

I'm using modin.pandas to scale pandas for large dataset. However, when using pd.read_csv to load a 5 MB csv dataset in jupyter notebook to compare the performance of modin.pandas and pandas, it...

Ray object store running out of memory using out of core. How can I configure an external object store like s3 bucket?

import ray import numpy as np ray.init() @ray.remote def f(): return np.zeros(10000000) results = [] for i in range(100): print(i) results += ray.get([f.remote() for _ in...

ImportError: cannot import name 'Flags' from 'pandas'

I ran into the below when trying to import pandas from modin on mac os import modin.pandas as pd. what is the possible fix for this? error traceback ImportError ...

Error while importing library "modin" in Python 3.6

import modin.pandas as pd I am importing modin.pandas library in my windows 10 machine but getting error "AttributeError: module 'ray' has no attribute 'utils'" Anything missed while...

modin pandas read_parquet() failed on ETag KeyError trying to read a partitioned parquet from s3

I created a dataframe from pandas and used to_parquet(...) to write to s3 directly. arguments are: df.to_parquet('s3://bucket/fn.parquet', compression='gzip', engine='fastparquet',...