PyTHON How do you add a new key-value pair, key = \'\'week4\", value = 4.0, to a
ID: 3887759 • Letter: P
Question
PyTHON
How do you add a new key-value pair, key = ''week4", value = 4.0, to an existing dictionary named "cs410"?
Select one:
a.
b.
c.
d.
e.
A dictionary is a(n) _________ sequence that can hold values that are referenced by corresponding keys. It is a(n) _________ from keys to their corresponding values.
Select one:
a. unordered, link
b. unordered, mapping
c. ordered, link
d. ordered, mapping
In a dictionary, the key-value pairs are separated by _____, and the value is separated from its key by a _____.
Select one:
a. colons, period
b. commas, hyphen
c. commas, colon
d. periods, semicolon
e. periods, semicolon
What is the output of:
Select one:
a.
b.
c.
d.
e.
Suppose we have two lists l1 and l2:
Now let's do:
What is the second element in l3?
Select one:
a.
b.
c.
d.
e.
The "random.random()" function is NOT a truly __________ function because it generates __________ numbers.
Select one:
a. deterministic, pseudorandom
b. nondeterministic, random
c. nondeterministic, pseudorandom
d. deterministic, random
Which of the following function returns the key-value pairs from an existing dictionary named "d"?
Select one:
a.
b.
c.
d.
e.
Suppose a=4, b=9. What are the new values of a and b if we execute the following code?
Select one:
a. a=4, b=9
b. a=4, b=4
c. a=9, b=9
d. a=9, b=4
The important difference between tuples and lists is that tuples are _________.
Select one:
a. immutable
b. mutable
c. unordered
d. ordered
Which of the following data types is NOT hashable?
Select one:
a. float
b. integer
c. string
d. dictionary
Explanation / Answer
d. a=9, b=4 (It will be swapped)
The important difference between tuples and lists is that tuples is immutable
Which of the following data types is NOT hashable?
d. dictionary
Thanks, let me know if there is any doubts
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