Este test está cronometrado.
Tienes 8 minutos para completar 15 preguntas de este test.
Slicing is used to extract a part of the tuple
Each key is separated from its value by a colon
Keys are unique and act as the index
Keys are of mutable type but values can be immutable
Elements of tuple is enclosed in square brackets
What will be the output of the following Python code? >>>t=(1,2,4,3) >>>t[1:-1]
(1, 2)
(1, 2, 4)
(2,4)
(2, 4, 3)
What 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)]
[2, 3, 9]
[1, 2, 4, 3, 8, 9]
[1,4,8]
(1, 4, 8)
What will be the output of the following Python code? >>>t = (1, 2) >>>2 * t
[1, 2, 1, 2]
(1, 1, 2, 2)
[1, 1, 2, 2]
(1,2,1,2)
What will be the output of the following Python code? >>>t1 = (1, 2, 4, 3) >>>t2 = (1, 2, 3, 4) >>>t1 < t2
True
False
error
none
Which of the following statements create a dictionary?
d = {}
d = {“john”:40, “peter”:45}
d = {40:”john”, 45:”peter”}
All of the above
What will be the output of the following Python code snippet? d = {"john":40, "peter":45} "john" in d
Which of these about a dictionary is false?
The values of a dictionary can be accessed using keys
The keys of a dictionary can be accessed using values
Dictionaries aren’t ordered
Dictionaries are mutable
If a is a dictionary with some key-value pairs, what does a.popitem() do?
Removes an arbitrary element
Removes all the key-value pairs
Removes the key-value pair for the key given as an argument
Invalid method for dictionary
What will be the output of the following Python code snippet? >>> a={1:"A",2:"B",3:"C"} >>> del a
method del doesn’t exist for the dictionary
del deletes the values in the dictionary
del deletes the entire dictionary
del deletes the keys in the dictionary
Which of the statements about dictionary values if false?
More than one key can have the same value
The values of the dictionary can be accessed as dict[key]
Values of a dictionary must be unique
Values of a dictionary can be a mixture of letters and numbers