Python: Create an object for writing and iterate over the rows to print the values

Last update on March 31 2025 12:51:38 (UTC/GMT +8 hours)

9. CSV Write Object Iterate

Write a Python program to create an object for writing and iterate over the rows to print the values.

Sample Solution:

Python Code :

import csv
import sys
with open('temp.csv', 'wt') as f:
    writer = csv.writer(f)
    writer.writerow(('id1', 'id2', 'date'))
    for i in range(3):
        row = (
            i + 1,
            chr(ord('a') + i),
            '01/{:02d}/2019'.format(i + 1),)
        writer.writerow(row)
print(open('temp.csv', 'rt').read())

temp.csv

"country_id"|"country_name"|"region_id"
"AR"|"Argentina"| 2
"AU"|"Australia"| 3
"BE"|"Belgium"| 1
"BR"|"Brazil"| 2
"CA"|"Canada"| 2

Sample Output:

id1,id2,date
1,a,01/01/2019
2,b,01/02/2019
3,c,01/03/2019

For more Practice: Solve these Related Problems:

• Write a Python program to create a CSV writer object, iterate over a list of lists, and print each row before writing them to a file.
• Write a Python script to open a CSV file for writing, iterate through a data list, and print each row's values to the console as they are written.
• Write a Python program to create an object for writing to a CSV file and then iterate over rows of data, applying a transformation before printing.
• Write a Python script to initialize a CSV writer, loop through a series of rows, print the row data, and then write the data to a new CSV file.

Python Code Editor:

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