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Python: Remove the first occurrence of a specified element from an array

Python: Array Exercise-12 with Solution

Write a Python program to remove the first occurrence of a specified element from an array.

Pictorial Presentation:

Python Exercises: Remove the first occurrence of a specified element from an array

Sample Solution:

Python Code:

from array import *
array_num = array('i', [1, 3, 5, 3, 7, 1, 9, 3])
print("Original array: "+str(array_num))
print("Remove the first occurrence of 3 from the said array:")
array_num.remove(3)
print("New array: "+str(array_num))

Sample Output:

Original array: array('i', [1, 3, 5, 3, 7, 1, 9, 3])                   
Remove the first occurrence of 3 from the said array:                  
New array: array('i', [1, 5, 3, 7, 1, 9, 3])

Python Code Editor:

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Previous: Write a Python program to remove a specified item using the index from an array.
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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