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Python: Insert an element at a specified position into a given list

Python List: Exercise - 80 with Solution

Write a Python program to insert an element at a specified position into a given list.

Sample Solution:

Python Code:

def insert_spec_position(x, n_list, pos):
    return n_list[:pos-1]+[x]+n_list[pos-1:]
n_list = [1,1,2,3,4,4,5,1]
print("Original list:") 
print(n_list)
kth_position = 3
x = 12
result = insert_spec_position(x, n_list, kth_position)
print("\nAfter inserting an element at kth position in the said list:")
print(result)

Sample Output: 

Original list:
[1, 1, 2, 3, 4, 4, 5, 1]

After inserting an element at kth position in the said list:
[1, 1, 12, 2, 3, 4, 4, 5, 1]

Flowchart:

Flowchart: Insert an element at a specified position into 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