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Python: Shuffle the elements of a given list

Python module: Exercise-6 with Solution

Write a Python program to shuffle the elements of a given list.

Use random.shuffle()

Sample Solution:

Python Code:

import random 
nums = [1, 2, 3, 4, 5]
print("Original list:")
print(nums)
random.shuffle(nums)
print("Shuffle list:")
print(nums)
words = ['red', 'black', 'green', 'blue']
print("\nOriginal list:")
print(words)
random.shuffle(words)
print("Shuffle list:")
print(words)

Sample Output: 

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

Original list:
['red', 'black', 'green', 'blue']
Shuffle list:
['green', 'blue', 'black', 'red']

Flowchart:

Flowchart: Shuffle the elements of a given list.

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Python Code Editor:

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Next: Write a Python program to generate a float between 0 and 1, inclusive and generate a random float within a specific range.

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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