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Python: Use multiple map arguments

Python map: Exercise-7 with Solution

Write a Python program to add two given lists and find the difference between lists. Use map() function.

Sample Solution:

Python Code :

def addition_subtrction(x, y):
    return x + y, x - y
 
nums1 = [6, 5, 3, 9]
nums2 = [0, 1, 7, 7]
print("Original lists:")
print(nums1)
print(nums2)
result = map(addition_subtrction, nums1, nums2)
print("\nResult:")
print(list(result))

Sample Output:

Original lists:
[6, 5, 3, 9]
[0, 1, 7, 7]

Result:
[(6, 6), (6, 4), (10, -4), (16, 2)]

Python Code Editor:

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Previous: Write a Python program to convert all the characters in uppercase and lowercase and eliminate duplicate letters from a given sequence. Use map() function.
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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