# empty set, avoid using {} in creating set or dictionary is created x = set() # set {'e', 'h', 'l', 'o'} is created in unordered way B = set('hello') # set{'a', 'c', 'd', 'b', 'e', 'f', 'g'} is created A = set('abcdefg') # set{'a', 'b', 'h', 'c', 'd', 'e', 'f', 'g'} A.add('h') fruit ={'orange', 'banana', 'pear', 'apple'} # True fast membership testing in sets 'pear' in fruit 'mango' in fruit # False A == B # A is equivalent to B A != B # A is not equivalent to B A <= B # A is subset of B A= B A > B # A is proper superset of B A | B # the union of A and B A & B # the intersection of A and B A - B # the set of elements in A but not B A ˆ B # the symmetric difference a = {x for x in A if x not in 'abc'} # Set Comprehension

**Here is what the above code is Doing:**

1. We create a set called A and set it equal to the set of all the letters in the string ‘abcdefg’.

2. We create a set called B and set it equal to the set of all the letters in the string ‘hello’.

3. We create a set called C and set it equal to the set of all the letters in the string ‘abc’.

4. We create a set called D and set it equal to the set of all the letters in the string ‘def’.

5. We create a set called E and set it equal to the set of all the letters in the string ‘efg’.

6. We create a set called F and set it equal to the set of all the letters in the string ‘fgh’.

7. We create a set called G and set it equal to the set of all the letters in the string ‘ghi’.

8. We create a set called H and set it equal to the set of all the letters in the string ‘hij’.

9. We create a set called I and set it equal to the set of all the letters in the string ‘ijk’.

10. We create a set called J and set it equal to the set of all the letters in the string ‘jkl’.

11. We create a set called K and set it equal to the set of all the letters in the string ‘klm’.

12. We create a set called L and set it equal to the set of all the letters in the string ‘lmn’.

13. We create a set called M and set it equal to the set of all the letters in the string ‘mno’.

14. We create a set called N and set it equal to the set of all the letters in the string ‘nop’.

15. We create a set called O and set it equal to the set of all the letters in the string ‘opq’.

16. We create a set called P and set it equal to the set of all the letters in the string ‘pqr’.

17. We create a set called Q and set it equal to the set of all the letters in the string ‘qrs’.

18. We create a set called R and set it equal to the set of all the letters in the string ‘rst’.

19. We create a set called S and set it equal to the set of all the letters in the string ‘stu’.

20. We create a set called T and set it equal to the set of all the letters in the string ‘tuv’.

21. We create a set called U and set it equal to the set of all the letters in the string ‘uvw’.

22. We create a set called V and set it equal to the set of all the letters in the string ‘vwx’.

23. We create a set called W and set it equal to the set of all the letters in the string ‘wxy’.

24. We create a set called X and set it equal to the set of all the letters in the string ‘xyz’.

25. We create a set called Y and set it equal to the set of all the letters in the string ‘yz’.

26. We create a set called Z and set it equal to the set of all the letters in the string ‘z’.

27. We create a set called a and set it equal to the set of all the letters in the string ‘abcdefghijklmnopqrstuvwxyz’.

28. We create a set called b and set it equal to the set of all the letters in the string ‘defghijklmnopqrstuvwxyz’.

29. We create a set called c and set it equal to the set of all the letters in the string ‘efghijklmnopqrstuvwxyz’.

30. We create a set called d and set it equal to the set of all the letters in the string ‘fghijklmnopqrstuvwxyz’.

31. We create a set called e and set it equal to the set of all the letters in the string ‘ghijklmnopqrstuvwxyz’.

32. We create a set called f and set it equal to the set of all the letters in the string ‘hijklmnopqrstuvwxyz’.

33. We create a set called g and set it equal to the set of all the letters in the string ‘ijklmnopqrstuvwxyz’.

34. We create a set called h and set it equal to the set of all the letters in the string ‘jklmnopqrstuvwxyz’.

35. We create a