QUESTION $1$

cubes $=\{$x: x$**3$ for x in range$(5)\}$

What code is equivalent to this dictionary comprehension?

cubes $=\{\}$

for x in range$(5)$:

cubes.append$($x: x $**3)$

cubes $=\{\}$

for x in range$(5)$:

cubes$[$x$]=$ x $**3$

cubes $=\{\}$

for x in range$(5)$:

cubes.insert$($x$,$ x $**3)$

cubes $=\{\}$

for x in range$(5)$:

cubes$[$x: x $**3]$

$10$ points

QUESTION $2$

What is the process used to convert an object to a stream of bytes that can be saved in a file?

dumping

streaming

writing

pickling

$10$ points

QUESTION $3$

What mode do you use with the open function to open a binary file for writing?

wb

b

bw

binarywrite

$10$ points

QUESTION $4$

Which method would you use to get all the elements in a dictionary returned as a list of tuples?

list

items

keys

pop

$10$ points

QUESTION $5$

Which answer pair will correctly complete this sentence:

To read an object from a file, you use the $\_\_\_\_\_\_\_$ funciton of the $\_\_\_\_\_\_\_$ module.

get, object

dump, pickle

read, object

load, pickle

$10$ points

QUESTION $6$

squ$\_$dict $=\{\}$

for x in range$(10)$:

if x $\%2==0$:

squ$\_$dict$[$x$]=$ x $**2$

What is the equivalent dictionary comprehension of the above code?

squ$\_$dict $=\{$if x $\%2==0($x: x$**2)$ for x in range$(10)\}$

squ$\_$dict $=\{$for x in range$(10)$ if x $\%2==0$ x: x$**2\}$

squ$\_$dict $=\{$x: x$**2$ for x in range$(10)$ if x $\%2==0\}$

squ$\_$dict $=\{$for x in range$(10)$ x: x$**2$ if x $\%2==0\}$

$10$ points

QUESTION $7$

When the following code executes, what values will be in the stocks$2$ dictionary?

stocks$1=\{\text{'}$GOOGL$\text{'}$:$2708,$ 'AAPL':$147,\text{'}$MSFT$\text{'}$:$288\}$

stocks$2=\{\text{'}$IBM$\text{'}$:$143,\text{'}$HPQ$\text{'}$:$29,\text{'}$MSFT$\text{'}$:$288\}$

stocks$1|=$ stocks$2$

$\{\text{'}$GOOGL$\text{'}$:$2708,$ 'AAPL':$147,\text{'}$MSFT$\text{'}$:$288,$ 'IBM':$143,\text{'}$HPQ$\text{'}$:$29\}$

$\{\text{'}$GOOGL$\text{'}$:$2708,$ 'AAPL':$147,\text{'}$MSFT$\text{'}$:$288,\text{'}$MSFT$\text{'}$:$288,$ 'IBM':$143,\text{'}$HPQ$\text{'}$:$29\}$

$\{\text{'}$IBM$\text{'}$:$143,\text{'}$HPQ$\text{'}$:$29,\text{'}$MSFT$\text{'}$:$288\}$

$\{\text{'}$IBM$\text{'}$:$143,\text{'}$HPQ$\text{'}$:$29\}$

$10$ points

QUESTION $8$

What operator was introduced in Python $3\mathrm{.}9$ that performs a dictionary merge?

$^$

$|$

$->$

$<-$

$10$ points

QUESTION $9$

The $\_\_\_\_\_\_\_\_$ method returns all of a dictionary's keys as a dictionary view.

$10$ points

QUESTION $10$

stations $=\{89\mathrm{.}7$:'WCPE', $91\mathrm{.}5$:'UNCW', $92\mathrm{.}3$:$\text{'}$WKRR$\text{'},92\mathrm{.}5$:$\text{'}$WYFL$\text{'}\}$

How could you create a list of the values from stations and assign it to station$\_$names?

station$\_$names $=$ list$($stations$.$values$())$

station$\_$names $=$ stations.values$()$

station$\_$names $=$ stations.values$\_$list$()$

station$\_$names.list$($stations$)$