python how to write to csv file code example

Example 1: csv python write

import csv

with open('names.csv', 'w') as csvfile:
    fieldnames = ['first_name', 'last_name']
    writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

    writer.writeheader()
    writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})
    writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})
    writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})

Example 2: read csv python

import pandas as pd 
data = pd.read_csv("filename.csv") 
data.head()

Example 3: Write a table to CSV file python

header = [re.sub(' +',' ',i[0][:-1].replace('\n', ' ')) for i in optionsTable[0]]

with open('test.csv', 'w') as fp:
   writer = csv.writer(fp, delimiter=',')
   writer.writerow(header)
   for row in optionsTable:
      writer.writerow([i[1] for i in row])

#Credit to https://stackoverflow.com/users/790387/burhan-khalid Burhan Khalid
#On StackOverflow.