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What is the output of the following statement: list('123')? a [123] b ['123'] c '123' d ['1','2','3'] What are the contents of list b?

What is the output of the following statement: list('123')?

 a

[123]

 b

['123']

 c

'123'

 d

['1','2','3']

What are the contents of list b?

>>> a = [1,2,3,4,5]

>>> b = [-2*x for x in a]

 a

[2,4,6,8,10]

 b

[1,2,3,4,5]

 c

[-2,-4,-6,-8,-10]

 d

[-2,-4]

What is the output of the following code snippet?

>>> a = [1,2,3,4] 

>>> sum([x*x for x in a])

 a

[1,4,9,16]

 b

14

 c

program error

 d

30

Assume that my_dict has the following entries: my_dict = dict(bananas=1.59, fries=2.39, burger=3.50, sandwich=2.99). What is the output of the following code segment?

my_dict['burger'] = my_dict['sandwich']

val = my_dict.pop('sandwich')

print(my_dict['burger'])

 a

1.49

 b

3.50

 c

3.69

 d

2.99

Assume that my_dict has the following entries: my_dict = dict(bananas=1.59, fries=2.39, burger=3.50, sandwich=2.99). What is the output of the following code segment?

my_dict.update(dict(soda=1.49, burger=3.69))

burger_price = my_dict.get('burger', 0)

print(burger_price)

 a

1.49

 b

3.50

 c

3.69

 d

2.99

A(n) ___________ method initializes a class.

 a

__init__

 b

initialization

 c

dictionary

 d

constructor

What is the output of the following code snippet?

solar_distances = dict(mars=219.7e6, venus=116.4e6, jupiter=546e6, pluto=2.95e9)

list_of_distances = list(solar_distances.values()) # Convert view to list

closest = sorted(list_of_distances)[0]

next_closest = sorted(list_of_distances)[1]

print('%.4e' % next_closest)

 a

219.7e+06

 b

116.4e+06

 c

2.1970e+08

 d

116.4e+08

Given the list nums = [[10, 20, 30], [98, 99]], what does nums[1][1] evaluate to?

 a

30

 b

99

 c

98

 d

[[98,99]]

Given the following list: 

['Serena Williams', 'Vanessa Williams', 'john McEnroe', 'rafael Nadal']

The contents of key_sort is given by: 

key_sort = sorted(names, key=str.lower)

The elements of key_sort will be _________:

 a

['Serena Williams', 'Vanessa Williams', 'john McEnroe', 'rafael Nadal']

 b

['john McEnroe', 'rafael Nadal', 'Serena Williams', 'Vanessa Williams']

 c

['john','rafael','serena','vanessa']

 d

['john McEnroe', 'rafael Nadal', 'Serena Williams', 'Vanessa Williams']

Complete the following code snippet so that all of the negative values my_dict will be changed to zero.

for key, value in _______:

if value < 0:

my_dict[key] = 0

 a

my_dict.values()

 b

my_dict[keys]

 c

my_dict

 d

my_dict.items()

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