how to manipulate csv files in python

create csv file python

# This action requires the 'csv' module
import csv

# The basic usage is to first define the rows of the csv file:
row_list = [["SN", "Name", "Contribution"],
             [1, "Linus Torvalds", "Linux Kernel"],
             [2, "Tim Berners-Lee", "World Wide Web"],
             [3, "Guido van Rossum", "Python Programming"]]

# And then use the following to create the csv file:
with open('protagonist.csv', 'w', newline='') as file:
    writer = csv.writer(file)
    writer.writerows(row_list)
# This will create a csv file in the current directory

Posted by: Guest on February-24-2020

Source

import os import glob import pandas as pd os.chdir("/mydir") 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')

import csv, sys filename = 'some.csv' with open(filename, 'rb') as f: reader = csv.reader(f) try: for row in reader: print row except csv.Error as e: sys.exit('file %s, line %d: %s' % (filename, reader.line_num, e))

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