Output of Python Programs | Set 24 (Sets)
Last Updated :
29 Dec, 2017
Prerequisite: Python-Sets
1. What is the output of the code shown below?
sets = {1, 2, 3, 4, 4}
print(sets)
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Options:
- {1, 2, 3}
- {1, 2, 3, 4}
- {1, 2, 3, 4, 4}
- Error
Output:
2. {1, 2, 3, 4}
Explanation : Duplicate values are not allowed in sets. Hence, the output of the code shown above will be a set containing the duplicate value only once. Hence output will be {1, 2, 3, 4}.
2. What is the output of the code shown below?
sets = {3, 4, 5}
sets.update([1, 2, 3])
print(sets)
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Options:
- {1, 2, 3, 4, 5}
- {3, 4, 5, 1, 2, 3}
- {1, 2, 3, 3, 4, 5}
- Error
Output:
1. {1, 2, 3, 4, 5}
Explanation: The method update adds elements to a set.
3. What is the output of the code shown below?
set1 = {1, 2, 3}
set2 = set1.copy()
set2.add(4)
print(set1)
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Options:
- {1, 2, 3, 4}
- {1, 2, 3}
- Invalid Syntax
- Error
Output:
2. {1, 2, 3}
Explanation: In the above piece of code, set2 is barely a copy and not an alias of set1. Hence any change made in set2 isn’t reflected in set1.
4. What is the output of the code shown below?
set1 = {1, 2, 3}
set2 = set1.add(4)
print(set2)
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Options:
- {1, 2, 3, 4}
- {1, 2, 3}
- Invalid Syntax
- None
Output:
4. None
Explanation: add method doesn’t return anything. Hence there will be no output.
5. What is the output of the code shown below?
set1 = {1, 2, 3}
set2 = {4, 5, 6}
print(len(set1 + set2))
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Options:
- 3
- 6
- Unexpected
- Error
Output:
4. Error
Explanation: unsupported operand type(s) for +: ‘set’ and ‘set’.
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