Python: Parse a given CSV string and get the list of lists of string values
Python module: Exercise-3 with Solution
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:

Python Code Editor:
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Next: Write a Python program to read the current line from a given CSV file.
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Python: Tips of the Day
Inverts a dictionary with non-unique hashable values:
Example:
def tips_collect_dictionary(obj): inv_obj = {} for key, value in obj.items(): inv_obj.setdefault(value, list()).append(key) return inv_obj ages = { "Owen": 25, "Jhon": 25, "Pepe": 15, } print(tips_collect_dictionary(ages))
Output:
{25: ['Owen', 'Jhon'], 15: ['Pepe']}
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