On line Test- Tuples and Dictionary

1. 1Slicing is used to extract a part of the tuple

   1. AVerdadero
   2. BFalso
2. 2Each key is separated from its value by a colon

   1. AVerdadero
   2. BFalso
3. 3Keys are unique and act as the index

   1. AVerdadero
   2. BFalso
4. 4Keys are of mutable type but values can be immutable

   1. AVerdadero
   2. BFalso
5. 5Elements of tuple is enclosed in square brackets

   1. AVerdadero
   2. BFalso
6. 6What will be the output of the following Python code?
   >>>t=(1,2,4,3)
   >>>t[1:-1]
   

   1. A(1, 2)
   2. B(1, 2, 4)
   3. C(2,4)
   4. D(2, 4, 3)
7. 7What will be the output of the following Python code?
   >>>t = (1, 2, 4, 3, 8, 9)
   >>>[t[i] for i in range(0, len(t), 2)]
   

   1. A[2, 3, 9]
   2. B[1, 2, 4, 3, 8, 9]
   3. C[1,4,8]
   4. D(1, 4, 8)
8. 8What will be the output of the following Python code?
   >>>t = (1, 2)
   >>>2 * t
   

   1. A[1, 2, 1, 2]
   2. B(1, 1, 2, 2)
   3. C[1, 1, 2, 2]
   4. D(1,2,1,2)
9. 9What will be the output of the following Python code?
   >>>t1 = (1, 2, 4, 3)
   >>>t2 = (1, 2, 3, 4)
   >>>t1 < t2
   

   1. ATrue
   2. BFalse
   3. Cerror
   4. Dnone
10. 10Which of the following statements create a dictionary?

    1. Ad = {}
    2. Bd = {“john”:40, “peter”:45}
    3. Cd = {40:”john”, 45:”peter”}
    4. DAll of the above

11. 11What will be the output of the following Python code snippet?
    d = {"john":40, "peter":45}
    "john" in d
    

    1. ATrue
    2. BFalse
    3. Cerror
    4. Dnone
12. 12Which of these about a dictionary is false?

    1. AThe values of a dictionary can be accessed using keys
    2. BThe keys of a dictionary can be accessed using values
    3. CDictionaries aren’t ordered
    4. DDictionaries are mutable
13. 13If a is a dictionary with some key-value pairs, what does a.popitem() do?

    1. ARemoves an arbitrary element
    2. BRemoves all the key-value pairs
    3. CRemoves the key-value pair for the key given as an argument
    4. DInvalid method for dictionary
14. 14What will be the output of the following Python code snippet?
    >>> a={1:"A",2:"B",3:"C"}
    >>> del a
    

    1. Amethod del doesn’t exist for the dictionary
    2. Bdel deletes the values in the dictionary
    3. Cdel deletes the entire dictionary
    4. Ddel deletes the keys in the dictionary
15. 15Which of the statements about dictionary values if false?

    1. AMore than one key can have the same value
    2. BThe values of the dictionary can be accessed as dict[key]
    3. CValues of a dictionary must be unique
    4. DValues of a dictionary can be a mixture of letters and numbers

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Test sobre On line Test- Tuples and Dictionary, creado por Aparna Dhirde el 18/03/2020.

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Aparna Dhirde

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