exam 3

Question 1

a programmer will typically write Python code in a file, and then pass that file as input to the interpreter

Answer 1

script

Question 2

a file containing Python code that can be imported and used by scripts, other modules, or the interactive interpreter.

Answer 2

module

Question 3

A module being required by another program is often called a ____.

Answer 3

dependency

Question 4

A dictionary of the loaded modules is stored in ____.

Answer 4

sys.modules

Question 5

A ____ is simply a namespace that contains definitions from the module.

Answer 5

module object

Question 6

____is a global string variable automatically added to every module that contains the name of the module.

Answer 6

__name__

Question 7

A programmer can specify names to import from a module by using the ____ keyword in an import statement

Answer 7

from

Question 8

The program below imports names from the ____ module, a Python standard library module that contains a number of algorithms for creating a secure ____ of a text message.

Answer 8

hashlib, hash

Question 9

A ____ maps names to objects.

Answer 9

namespace

Question 10

____ is the area of code where a name is visible.

Answer 10

Scope

Question 11

The process of searching for a name in the available namespaces is called ____.

Answer 11

scope resolution

Question 12

____ is the process of dividing a program into separate modules that can be developed and tested separately and integrated into a single program.

Answer 12

Modular development

Question 13

Programs are written using ____, meaning a small amount of code is written and tested, then a small amount more (an incremental amount) is written and tested, and so on.

Answer 13

incremental development

Question 14

To assist with the incremental development process, programmers commonly introduce ____, which are function definitions whose statements haven’t been written yet.

Answer 14

function stubs

Question 15

One approach is to use the ____ keyword, which performs no operation except to act as a placeholder for a required statement.

Answer 15

pass

Question 16

The ____ indicates that the function is not implemented and causes the program to stop execution.

Answer 16

NotImplementedError

Question 17

The ____ includes various utilities and tools for performing common program behaviors.

Answer 17

Python standard library

Question 18

Functions for creating and editing of dates and times objects

Answer 18

datetime

Question 19

Functions for working with random numbers

Answer 19

random

Question 20

Functions that create complete copies of objects

Answer 20

copy

Question 21

Functions that get the current time, convert time zones, and sleep for a number of seconds

Answer 21

time

Question 22

Mathematical functions

Answer 22

math

Question 23

Operating system informational and management helper functions

Answer 23

os

Question 24

System-specific environment or configuration helper functions

Answer 24

sys

Question 25

The Python interactive debugger

Answer 25

pdb

Question 26

Python uses ____ to represent every possible character as a unique number, known as a ____.

Answer 26

Unicode, code point

Question 27

The two-item sequence for special characters is called an ____.

Answer 27

escape sequence

Question 28

Escape sequences can be ignored using a ____.

Answer 28

raw string

Question 29

The built-in function ____ returns an encoded integer value for a string of length one.

Answer 29

ord()

Question 30

The built-in function ____ returns a string of one character for an encoded integer.

Answer 30

chr()

Question 31

Returns a copy of the string with all occurrences of the substring old replaced by the string new. The old and new arguments may be string variables or string literals.

Answer 31

replace(old, new)

Question 32

Returns a copy of the string with all occurrences of the substring old replaced by the string new. The old and new arguments may be string variables or string literals., except it only replaces the first count occurrences of old.

Answer 32

replace(old, new, count)

Question 33

The string method ____ splits a string into a list of tokens.

Answer 33

split()

Question 34

Each ____ is a substring that forms a part of a larger string.

Answer 34

token

Question 35

A ____ is a character or sequence of characters that indicates where to split the string into tokens.

Answer 35

separator

Question 36

The ____ string method performs the inverse operation of split() by joining a list of strings together to create a single string.

Answer 36

join()

Question 37

An ____ is an integer matching a specific position in a string’s sequence of characters.

Answer 37

index

Question 38

The ____ determines how much to increment the index after reading each element.

Answer 38

stride

Question 39

A ____ may include a field width that defines the minimum number of characters that must be inserted into the string.

Answer 39

format specification

Question 40

A format specification can include an ____ that determines how a value should be aligned within the width of the field.

Answer 40

alignment character

Question 41

The ____ is used to pad a replacement field when the inserted string is smaller than the field width.

Answer 41

fill character

Question 42

The optional ____ component of a format specification indicates how many digits should be included in the output of floating types.

Answer 42

precision

Question 43

The ____ function retrieves both the index and corresponding element value at the same time, providing a cleaner and more readable solution.

Answer 43

enumerate()