w3resource

Python: Parse a given CSV string and get the list of lists of string values


3. CSV String Parser

Write a Python program to parse a given CSV string and get a list of lists of string values. Use csv.reader

We will get a list of lists of string values after parsing a CSV formatted string where each list of strings represents a line. For example "x, y, z" will become [["x", "y", "z"]].

Sample Solution:

Python Code:

import csv
csv_string = """1,2,3
4,5,6
7,8,9
"""
print("Original string:")
print(csv_string)
lines = csv_string.splitlines()
print("List of CSV formatted strings:")
print(lines)
reader = csv.reader(lines)
parsed_csv = list(reader)
print("\nList representation of the CSV file:")
print(parsed_csv)

Sample Output:

Original string:
1,2,3
4,5,6
7,8,9

List of CSV formatted strings:
['1,2,3', '4,5,6', '7,8,9']

List representation of the CSV file:
[['1', '2', '3'], ['4', '5', '6'], ['7', '8', '9']]

Flowchart:

Flowchart: Parse a given CSV string and get the list of lists of string values.

For more Practice: Solve these Related Problems:

  • Write a Python program to parse a multiline CSV string using csv.reader and output the result as a list of lists.
  • Write a Python function that takes a CSV formatted string with custom delimiters and returns a nested list of strings using csv.reader.
  • Write a Python script to convert a CSV string with quoted fields into a list of lists, then print each sublist.
  • Write a Python program to parse a CSV string containing newline characters within quoted fields and display the resulting list of lists.

Go to:


Previous: Write a Python program to count the number of lines in a given CSV file.
Next: Write a Python program to read the current line from a given CSV file.

Python Code Editor:


Have another way to solve this solution? Contribute your code (and comments) through Disqus.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.