Python: Remove consecutive duplicates of a given list
Python List: Exercise - 73 with Solution
Write a Python program to remove consecutive (following each other continuously) duplicates (elements) from a given list.
Sample Solution:
Python Code:
# Import the 'groupby' function from the 'itertools' module
from itertools import groupby
# Define a function 'compress' that takes a list of numbers 'l_nums' as input
def compress(l_nums):
# Use 'groupby' to group consecutive duplicates and return the unique keys
return [key for key, group in groupby(l_nums)]
# Define a list 'n_list' with consecutive duplicate elements
n_list = [0, 0, 1, 2, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9, 4, 4]
# Print a message indicating the purpose of the following output
print("Original list:")
# Print the original list 'n_list'
print(n_list)
# Print a message indicating the purpose of the following output
print("\nAfter removing consecutive duplicates:")
# Call the 'compress' function with 'n_list' as an argument and print the result with consecutive duplicates removed
print(compress(n_list))
Sample Output:
Original list: [0, 0, 1, 2, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9, 4, 4] After removing consecutive duplicates: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 4]
Flowchart:

Python Code Editor:
Previous: Write a Python program to flatten a given nested list structure.
Next: Write a Python program to pack consecutive duplicates of a given list elements into sublists.
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