Welcome folks today in this post we will be merging or combining multiple csv files in python using pandas library. All the source code of the application will be given below.

Get Started

In order to get started you need to install the following library using the pip command as shown below

pip install pandas

After installing this library make an app.py file and copy paste the following code

app.py

import os
import glob
import pandas as pd
os.chdir("/uploads")
extension = 'csv'
all_filenames = [i for i in glob.glob('*.{}'.format(extension))]

#combine all files in the list
combined_csv = pd.concat([pd.read_csv(f) for f in all_filenames ])
#export to csv
combined_csv.to_csv( "combined_csv.csv", index=False, encoding='utf-8-sig')

Before executing the python script you need to create the directory called as uploads where you will put all the input csv files which needs to be merged like this

Now you execute the python script by typing the below command as shown below

python app.py