Ch. 10 Exam Review

A collection of useful functions is commonly called a _______________.

• library
• set
• group
• node

Where can programmers find Python API documentation?

• Only in printed books you must purchase

• Freely available at Python's website

• Only in secured online locations needing a paid subscription to access

• You must look at the internal Python source code to figure out how things work

Using built-in Python modules forces a programmer to re-create functions to handle common tasks.

• True

• False

Which of the following statements will let you use the random library functions in your code?

• import random

• use random

• random.randrange()

• rand

Which of the following best describes the output from the following function call?

rand = random.randrange(10,15)

• A random integer in the range 10 up to (and including) 15

• A random floating point value from 10.0 up through and including 15.0

• A random integer from 10 up to (but not including) 15

• A random integer from 0 up to (but not including) 5

What can you confidently say about the following code?

random.seed(1)

print(random.randrange(0,10))

• The first random number produced will always be 1

• It will produce a random integer from 0 up through (but not including) 10

• It will produce a random integer from 0 up through (and including) 10

• It will print exactly the same value each time the code is run

Given a list named "mystery", which of the following expressions will return a random element in that list?

• mystery.choice()

• mystery.random()

• random(mystery)

• random.choice(mystery)

Given the code below, which of the following answers represents a possible printed output?

mystery = ["A", "B", "C"] random.shuffle(mystery) print(mystery)

• ['C', 'A', 'B']

• ['C', 'A']

• ['A']

• All of these are possible

Which of the following expressions will return a random floating point value between 0.0 and 1.0?

• random.distribute(0.0, 1.0)

• random.randrange(0,1)

• random.random()

• random.float(0, 1)

Why might you use the random.seed() function?

• To begin generating the same sequence of "random" numbers from a particular seed value

• To enable the random library to provide any random numbers at all

• To set the minimum and maximum values produced by the random functions

• To ensure random numbers will start out small and then grow over time