difficulty: experthelp wantedperformance
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I just tried to read a csv file of size 42.6 MB which consists of 550241 records. When I tried with daru here is following statistics
# analysis.rb
require 'daru'
df = Daru::DataFrame.from_csv('./IndiaAffectedWaterQualityAreas.csv')
p df.first(2)
$ time ruby analysis.rb
real 0m48.878s
user 0m47.898s
sys 0m0.798s
if I do the same with python then it shows as follows
# analysis.py
import numpy as np # linear algebra
import pandas as pd
data = pd.read_csv('./IndiaAffectedWaterQualityAreas.csv', encoding = "ISO-8859-1")
print(data.tail(25))
$ time python analysis.py
real 0m1.649s
user 0m1.439s
sys 0m0.195s
Since Github doesn't allow a file to upload more than 10 MB so I couldn't upload. But you can get the data from https://www.kaggle.com/venkatramakrishnan/india-water-quality-data