CS Python Fundamentals Test 12 PRACTICE

Python Dictionaries store information using pairs of ​ (a)   and ​ (b)  

• keys
• values
• indices
• parameters

The dictionary dnry is initialized as follows:

dnry = {"L": 8, "W": 5, "H": 11}

Which statement would evaluate to 5?

• dnry[1]

• dnry["W"]

• dnry["5"]

• dnry[2]

For which Python data type does the order of the items matter?

• dictionaries only

• lists only

• both dictionaries and lists

• neither dictionaries nor lists

Dictionary dnry is defined as follows:

dnry = {"A": "x", "B": "y", "C": "z"}

Which Python statement will return True?

I. "y" in dnry

II. "C" in dnry

• I only

• II only

• Both I and II

• Neither I nor II

What is printed by the code shown here?

• {'PG': 'Adams', 'SG': 'Berk', 'C': 'Dugan'}

• {'PG': 'Adams', 'SG': 'Berk', 'C': 'Nelson'}

• {'PG': 'Adams', 'SG': 'Berk', 'C': 'Dugan', 'SF': 'Harris', 'C': 'Nelson'}

• {'PG': 'Adams', 'SG': 'Berk', 'C': 'Nelson', 'SF': 'Harris'}

Which statement(s) will set the value of the key "99" to "Judge" in the dictionary NYY if the key "99" is found, and add the key/value pair if the key "99" is not found?

I. NYY["99"] = "Judge"

II. NYY.update({"99": "Judge"})

III. NYY.setdefault("99", "Judge")

• I only

• II only

• II and III only

• I and II only

What will be the output of the code shown here?

• 0

• 3

• 10

• 13

Given the dictionary defined in the code shown here, which algorithm will print out:

These are not the droids you're looking for

• 
• 
• 
• 

How is the dictionary returned by this method different than the one passed in as a parameter?

• it will have twice as many key:value pairs

• The two dictionaries will be identical

• it will swap all keys and values

• It will sort the dictionary from last to first

What is the output of the code shown here?

• Glasgow

  Brussels

• Glasgow

  London

  Brussels

  Paris

• Day 1

  Day 4

• Glasgow

  Day 1

  Brussels

  Day 4