Dictionaries
Lists and Sort
Functions and Syntax
Syntax
Random1
Random2
100
Consider the following dictionary:
dict = { 'aardvark' : 'anthony', 'buffalo' : 'boris', 'zebra' : 'zelda' }
What would be the out of the following:
dict['aardvark']
'anthony'
100
What is the out of the following?
>>>a[100, 30, 20]
>>>a
100, 30, 20
100
In the following code, var1 is a(n)
def myFunction(var1)
var1 is a parameter
100
What is wrong with the following function?
def addOne(number): print number + 1
Everything is one line / there is no block indentation.
100
What would be the output of the following?
False
100
Can len() be used with tuples? If so, why would you use it?
Yes, it would tell you the number of items in a tuple.
200
True or False:
each key in a dictionary must be unique
True
200
What is the output of the following?
>>>a[100, 30, 20]
>>>a[2]
20
200
What is the maximum number of tasks a good function should generally complete for you?
1 task
200
What word would you use to describe the following?
question = ('apple', 'banana', 'cherry')
This is a tuple
200
What programming paradigm describes this method of showing an image?
pic.show()
object oriented
200
If you were using a sequential search for “date”, how many items in the following list would your code need to look at?
[“banana”, “date”, “cherry”, “apple”]
2
300
True or False:
Each key must be of a mutable type.
False, each key in a dictionary must be an immutable type.
300
Describe the code needed to set a list variable a that would store the values 100 and 20
>>> a[100, 20]
300
What is wrong with the following function, and why?
def countDown():
while a > 1:
print a
a = a – 1
Variable a is never defined - we need to Prime the Pump.
300
Which operator would be completed last in the following expression?
a * b / d + e / f
+
300
What is the name for an immutable ordered collection of characters?
a string
300
White on the board the line of code that would give us access to a library of tools that would allow us to read data from a website.
import urllib
400
Given the following dictionary, could you change Boris' first name to Bob? If so, how would you do this?
question = { "Aardvark" : "Anthony" , "Buffalo" : "Boris"}
Yes!
question[“Buffalo”] = “Bob”
400
Suppose you are using a binary search for the following list:
['bunny', 'cat', 'dog' ,'mouse']
What would be the first item you look at during your search?
dog
400
When using the style of software development that used for part 1 of project 4, what is the first function you should write for a program that will check the current weather in Boston?
A test function ex: test_checkWeather()
400
Write in one single line, a statement that would define a = 1, b = 2, and c = 3
a, b, c = 1, 2, 3
400
Could anything be done to make this line of code more efficient? If so, write it on the explain what you would change to make this as simple as possible:
if (a > b) == True and (b > a) == False:
if a > b:
400
Suppose I wanted to print “[fruit_name] is delicious!” for each fruit in the following list:
[“banana”, “date”, “cherry”, “apple”]
Which operation would be most appropriate: apply, filter, map, or reduce?
For double points, explain all three other operations!
map
500
Consider the following dictionary:
dict = { 'aardvark' : 'anthony', 'buffalo' : 'boris', 'zebra' : 'zelda' }
What would be the output of:
dict.keys()
['aardvark', 'buffalo', 'zebra']
500
What would be returned from the following statements?
number_list = range(-5, 5)
less_than_zero = list(filter(lambda x: x < 0, number_list))
print(less_than_zero)
[-5, -4, -3, -2, -1]
500
What would question(100) return given the following function??
def question(x):
if x == 5:
return 5
else:
return question(x - 5)
5
500
Write on the board a dictionary represented by the variable name dict, which contains two people:
Anthony Aardvark and Boris Buffalo
All or nothing, your syntax must be perfect.
{ "Aardvark" : "Anthony" , "Buffalo" : "Boris"}
500
Write the first line of an example of indefinite iteration, and explain how this is different from definite iteration.
While i > 1 :
This is different from definite iteration, which might be something like
for i in range (0,10):
500
If you were to sort the following list using the bubble sort method, what would your list look like after the first pass of sorting?
[“banana”, “date”, “cherry”, “apple”]
[“banana”, “cherry”, “apple”, “date”]