Python | Ways to join pair of elements in list
Given a list, the task is to join a pair of elements of the list. Given below are a few methods to solve the given task.
Method #1: Using zip() method
# Python code to demonstrate # how to join pair of elements of list # Initialising list ini_list = ['a', 'b', 'c', 'd', 'e', 'f'] # Printing initial list print ("Initial list", str(ini_list)) # Pairing the elements of lists res = [i + j for i, j in zip(ini_list[::2], ini_list[1::2])] # Printing final result print ("Result", str(res)) |
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Output:
Initial list ['a', 'b', 'c', 'd', 'e', 'f'] Result ['ab', 'cd', 'ef']
Method #2: Using list comprehension and next and iters
# Python code to demonstrate # how to join pair of elements of list # Initialising list ini_list = iter(['a', 'b', 'c', 'd', 'e', 'f']) # Pairing the elements of lists res = [h + next(ini_list, '') for h in ini_list] # Printing final result print ("Result", str(res)) |
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Output:
Result ['ab', 'cd', 'ef']
Method #3: Using list comprehension
# Python code to demonstrate # how to join pair of elements of list # Initialising list ini_list = ['a', 'b', 'c', 'd', 'e', 'f'] # Printing initial lists print ("Initial list", str(ini_list)) # Pairing the elements of lists res = [ini_list[i] + ini_list[i + 1] for i in range(0, len(ini_list), 2)] # Printing final result print ("Result", str(res)) |
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Output:
Initial list ['a', 'b', 'c', 'd', 'e', 'f'] Result ['ab', 'cd', 'ef']
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