Function to read specific lines from CSV file with pandas

Question

I have a CSV file containing 200 lines. I want to create a function to read every 50 lines together and then store these (50 lines) in a .txt file until the csv file ends. How can I do that please? Any help appreciated.

import pandas as pd
import csv

def my_function(n):
  dataset = pd.read_csv('e.csv', nrows=50) 
  X = dataset.iloc[:,[0,0]].values

Update::

def my_function(n):

dataset = pd.read_csv('e.csv', nrows=n) 
X = dataset.iloc[:,[0,0]].values


with open('funct.txt', 'w') as file:
    for i in X:
        file.write("{}\n".format(i))

return

row_count = len(open("e.csv").readlines())
print(row_count)
n=50

my_function(n)

Now my problem how can read each 50 lines after another in each time until reach to the maximum length (200)?

Answer 1

You could test the remainder of the euclidean division of the index by 50 to check if your row number is a multiple of 50:

df=pd.read_csv('e.csv')
df=df[df.index%50==0]
df.to_csv('newfile.txt')

This way you do not need to iterate over your dataframe.