Python: Find the elements of a given list of strings that contain specific substring using lambda

Last update on April 22 2025 12:55:41 (UTC/GMT +8 hours)

39. Substring Finder Lambda

Write a Python program to find the elements of a given list of strings that contain a specific substring using lambda.

Sample Solution:

Python Code :

# Define a function 'find_substring' that filters elements containing a substring in a list
def find_substring(str1, sub_str):
    # Use the 'filter' function with a lambda to filter elements in 'str1' containing 'sub_str'
    result = list(filter(lambda x: sub_str in x, str1))
    
    # Return the filtered list
    return result

# Create a list 'colors' containing strings representing different colors
colors = ["red", "black", "white", "green", "orange"]

# Print the original list 'colors'
print("Original list:")
print(colors)

# Set a substring 'sub_str' to search within the list 'colors' and print it
sub_str = "ack"
print("\nSubstring to search:")
print(sub_str)

# Print elements from 'colors' that contain the specific substring using the 'find_substring' function
print("Elements of the said list that contain the specific substring:")
print(find_substring(colors, sub_str))

# Change the substring 'sub_str' to search and print it
sub_str = "abc"
print("\nSubstring to search:")
print(sub_str)

# Print elements from 'colors' that contain the new specific substring using 'find_substring' function
print("Elements of the said list that contain the specific substring:")
print(find_substring(colors, sub_str))

Sample Output:

Original list:
['red', 'black', 'white', 'green', 'orange']

Substring to search:
ack
Elements of the said list that contain specific substring:
['black']

Substring to search:
abc
Elements of the said list that contain specific substring:
[]

For more Practice: Solve these Related Problems:

Write a Python program to find strings in a list that end with a specified substring using lambda.
Write a Python program to find strings that start with a given substring using lambda.
Write a Python program to find strings that contain a specified substring in a case-insensitive manner using lambda.
Write a Python program to count how many strings in a list contain a specific substring using lambda.

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Python Code Editor:

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