Python: Convert a given list of strings into list of lists

Last update on February 22 2025 10:55:34 (UTC/GMT +8 hours)

Convert Strings to Lists of Characters

Write a Python program to convert a given list of strings into a list of lists.

Visuial Presentation:

Sample Solution:

Python Code:

# Define a function called 'strings_to_listOflists' that converts a list of strings into a list of lists, where each character of a string is a separate element in a sublist.
def strings_to_listOflists(colors):
    # Use a list comprehension to create a new list 'result' where each string is converted into a list of its characters.
    result = [list(word) for word in colors]
    return result

# Create a list 'colors' containing string values.
colors = ["Red", "Maroon", "Yellow", "Olive"]

# Print a message indicating the original list of strings.
print('Original list of strings:')
print(colors)

# Print a message indicating the intention to convert the list of strings into a list of lists.
print("\nConvert the said list of strings into a list of lists:")

# Call the 'strings_to_listOflists' function to perform the conversion and print the result.
print(strings_to_listOflists(colors)) 

Sample Output:

Original list of strings:
['Red', 'Maroon', 'Yellow', 'Olive']

Convert the said list of strings into list of lists:
[['R', 'e', 'd'], ['M', 'a', 'r', 'o', 'o', 'n'], ['Y', 'e', 'l', 'l', 'o', 'w'], ['O', 'l', 'i', 'v', 'e']]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to convert a list of strings into a list of lists of characters, excluding any non-alphabetic characters.
• Write a Python program to convert a list of strings into lists of characters and then sort each sublist alphabetically.
• Write a Python program to convert a list of strings into a list of lists of characters, converting all characters to uppercase.
• Write a Python program to convert a list of space-separated words into a list of lists, where each inner list contains the characters of a word.

Python Code Editor:

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