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Python: Pair up the consecutive elements of a given list

Python List: Exercise - 200 with Solution

Write a Python program to pair up the consecutive elements of a given list.

Sample Solution:

Python Code:

def pair_consecutive_elements(lst):
    result = [[lst[i], lst[i + 1]] for i in range(len(lst) - 1)]
    return result
nums =  [1,2,3,4,5,6]
print("Original lists:")
print(nums)
print("Pair up the consecutive elements of the said list:")
print(pair_consecutive_elements(nums))
nums =  [1,2,3,4,5]
print("\nOriginal lists:")
print(nums)
print("Pair up the consecutive elements of the said list:")
print(pair_consecutive_elements(nums))

Sample Output:

Original lists:
[1, 2, 3, 4, 5, 6]
Pair up the consecutive elements of the said list:
[[1, 2], [2, 3], [3, 4], [4, 5], [5, 6]]

Original lists:
[1, 2, 3, 4, 5]
Pair up the consecutive elements of the said list:
[[1, 2], [2, 3], [3, 4], [4, 5]]

Pictorial Presentation:

Python List: Pair up  the consecutive elements of a given list.

Flowchart:

Flowchart: Pair up  the consecutive elements of a given list.

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Python Code Editor:

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m