Python: Find all index positions of the maximum and minimum values in a given list using lambda

Last update on May 28 2022 13:32:35 (UTC/GMT +8 hours)

Python Lambda: Exercise-46 with Solution

Write a Python program to find index position and value of the maximum and minimum values in a given list of numbers using lambda.

Sample Solution:

Python Code :

def position_max_min(nums):
    max_result = max(enumerate(nums), key=(lambda x: x[1]))
    min_result = min(enumerate(nums), key=(lambda x: x[1]))
    return max_result,min_result

nums = [12,33,23,10.11,67,89,45,66.7,23,12,11,10.25,54]
print("Original list:")
print(nums)
result = position_max_min(nums)
print("\nIndex position and value of the maximum value of the said list:")
print(result[0])
print("\nIndex position and value of the minimum value of the said list:")
print(result[1])

Sample Output:

Original list:
[12, 33, 23, 10.11, 67, 89, 45, 66.7, 23, 12, 11, 10.25, 54]

Index position and value of the maximum value of the said list:
(5, 89)

Index position and value of the minimum value of the said list:
(3, 10.11)

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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