'''Question: 
Write a Python program to test whether every element in s is in t and every element in t is in s.
'''

# Python code: 

setx = set(["apple", "mango"])

sety = set(["mango", "orange"])

setz = set(["mango"])

issubset = setx <= sety

print(issubset)

issuperset = setx >= sety

print(issuperset)

issubset = setz <= sety

print(issubset)

issuperset = sety >= setz

print(issuperset)



'''Output sample: 
False                                                                                                         

False                                                                                                         

True                                                                                                          

True

'''