PCSE

What is the value returned from this code?

print(type(4))

• <type 'bool'>

• <class 'int'>

• <type 'str'>

• Undefined

Which line of code inserted in the program will add a random item from the list each time the loop runs?

• prize_list = random.choice(rand_item)

• rand_item = option_list.random(prize_list)

• rand_item = random.choice(option_list)

• rand_item = option_list.random()

Which collection structure allows items that are ordered and unchangeable?

• Tuple

• Dictionary

• List

• Set

Which of the following code snippets would be the correct way to import everything from a module

• Option 1

• Option 2

• Option 3

• Option 4

A developer wants to read a text file but he is unsure if the file exists in the current directory. Suggest a suitable module that would be used to check for the presence of the file in the current working directory.

• os module

• file module

• re module

• sys module

Consider the following piece of code. Which of the following is true?

from sklearn.linear_model import LinearRegression

• sklearn is a module and kernel_approximation is a package

• sklearn and linear_model are both packages

• LinearRegression is a module, which comes the linear_model package

• linear_model is a module of the sklearn package

The pip command line utility allows the developer to install _______?

• Python modules

• Invalid

• Python libraries

• Python packages

Suggest why a program may be broken down into individual functions

• Maintainability. Smaller, simpler functions are easier to maintain.

• It helps to avoid syntax errors

• Debugability. It's easier to debug simple functions than complex ones

• Non-Descriptive Naming of Variables

Which code would allocate and initialize a list of 10 integers?

• for i in range(11) nlist.append(i)

• None of these

• nlist = [0,0,0,0,0,0,0,0]

• nlist = [0] * 10

Which of the following best describes 're'? 're' (regular expression) provides regular expression matching operations similar to those found in Perl.

• an environment

• a module

• a package

• a suite