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Python: Split a given list into two parts where the length of the first part of the list is given

Python List: Exercise - 78 with Solution

Write a Python program to split a given list into two parts where the length of the first part of the list is given.

Sample Solution:

Python Code:

def split_two_parts(n_list, L):
    return n_list[:L], n_list[L:]
n_list = [1,1,2,3,4,4,5, 1]
print("Original list:") 
print(n_list)
first_list_length = 3
print("\nLength of the first part of the list:",first_list_length)
print("\nSplited the said list into two parts:")
print(split_two_parts(n_list, first_list_length))

Sample Output: 

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

Length of the first part of the list: 3

Splited the said list into two parts:
([1, 1, 2], [3, 4, 4, 5, 1])

Flowchart:

Flowchart: Split a given list into two parts where the length of the first part of the list is given.

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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