Skip to content
Related Articles

Related Articles

Improve Article

Python | Ways to join pair of elements in list

  • Last Updated : 25 Jun, 2019

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))
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))
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))
Output:
Initial list ['a', 'b', 'c', 'd', 'e', 'f']
Result ['ab', 'cd', 'ef']

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :