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Python: Check if a given set is superset of itself and superset of another given set

Python sets: Exercise-18 with Solution

Write a Python program to check if a given set is superset of itself and superset of another given set.

Sample Solution:

Python Code:

nums = {10,20,30,40,50}
print("Original set: ",nums)
print("If nums is superset of itself?")
print(nums.issuperset(nums))
num1 = {1, 2, 3, 4, 5, 7}
num2 = {2, 4}
num3 = {2, 4}
print("\nnum1 = ", num1)
print("num2 = ", num2)
print("num3 = ", num3)
print("If mum1 is superset of num2:")
print(num1>num2)
print("Compare mum2 and num3:")
print("If mum2 is superset of num3:")
print(num2>num3)
print("If mum3 is superset of num2:")
print(num3>num2)

Sample Output:

Original set:  {40, 10, 50, 20, 30}
If nums is superset of itself?
True

num1 =  {1, 2, 3, 4, 5, 7}
num2 =  {2, 4}
num3 =  {2, 4}
If mum1 is superset of num2:
True
Compare mum2 and num3:
If mum2 is superset of num3:
False
If mum3 is superset of num2:
False

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Previous: Write a Python program to check if two given sets have no elements in common.
Next: Write a Python program to find the elements in a given set that are not in another set.

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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