Everything

Question 1

What is a central processing unit

Answer 1

cpu.it performs computation

Question 2

Declarative knowledge

Answer 2

Facts and feelings we just know. know that

Question 3

Imperative knowledge

Answer 3

Knowledge we used when we do something.know-how

Question 4

Algorithm

Answer 4

They are imperative, rely on inputs, step bystep procedure with decisions

Question 5

Software

Answer 5

Description of instructions for a computer

Question 6

Expression

Answer 6

A combination of values and operators that evaluates to a single result

Question 7

Literals: floats, integers, strings and Boolean

Answer 7

_ Literals literally mean what say. Integers exam\ple: (1,2,3) float example (3.0,4.2 and real numbers string is text and bodlean is true false

Question 8

Variable

Answer 8

Named value, does not have a type! Value does. R must start with letter or underscore. Only contain letters or numbers or underscores and no keyword

Question 9

Arithemetic operators

Answer 9

Operants and results are numeric example (//int div)

Question 10

Companion operators

Answer 10

Operants are numerical results are Boolean like ><

Question 11

Logical operators

Answer 11

Operants and results are Boolean for example and,or, not,^(xor)aka one is true

Question 12

Syntax

Answer 12

In natural languages, syndaxis synonymous with grammar. In programming it is synonymous with rules are strict

Question 13

Python script

Answer 13

Sequence python statements an comments saved in plain text.

Question 14

Proposition

Answer 14

In programming, it Is a declarative statement that is either true or false

Question 15

Flow chart

Answer 15

Visual representation of procedure. Boxes are activities. Diamonds are decisions

Question 16

Iteration

Answer 16

The repetition of asequence of computer instructions a specified number of times (def) or until a condition is met (ind)

Question 17

Indefinite loops

Answer 17

Useful for when we want to keep executing a statement until true, when we want to execute forever. It is a while loop. WHILE TRUE AND USE BREAK TO ESCAPE.

Question 18

Definite iterations

Answer 18

For loop. Repetition of set instructions a number of times.

Question 19

String iterations

Answer 19

Len() returns length. Character is unit of info related to an alphabetic letters. Ord() to get numerical value of letter. ().isupper or ().islower to check if upper or lower.

Question 20

Range function

Answer 20

Starts at 0 number up until, number before last number

Question 21

Lists

Answer 21

Collection of values, ordered sequentially, can be diff types. []. each item in list is an element, start at 0. Can append. Insert, remove and reverse

Question 22

Slicing

Answer 22

Like a range, specified increments. [0:4] be 0,1,2,3 or [0:4:2] be 0,2

Question 23

Function

Answer 23

Have a name,zero or more inputs/outputs. Key for organization, resuability, decomposition etc. def keyword(parameters). Have return value

Question 24

Parameters

Answer 24

Variables initialized by arguments, not the actual value itself

Question 25

Arguments

Answer 25

Values passed into functions, the value itself

Question 26

Function dockstring

Answer 26

Description of a function like a comment, triple quoted

Question 27

Function body

Answer 27

One or more statements, can be pass

Question 28

Return value

Answer 28

Functions output,can be any value and can be none

Question 29

Local variables

Answer 29

Variables defined within a function. Created when function is called and deleted when function is done

Question 30

Global variables

Answer 30

Variables defined in script level. An access using keyword global aka global x

Question 31

Recursion

Answer 31

A function calling itself, beware of infinite recursion and needs a base case to know when to stop recusing

Question 32

Modules

Answer 32

Easier to construct a program, reuse functions. From x import y. From x import*. Import x . Dir() function tells us names in a module

Question 33

Tuple

Answer 33

Immutable. Created with parenthesis. Iterable. Storing simple sequence, returning multiple things from a function. Like lists

Question 34

Sets

Answer 34

Collection of values or objects, unordered, values cannot be duplicated.

Question 35

Set method

Answer 35

UNION. set1.union(set2) to get all of unique values INTERSECTION. set1.intersection(set2) to get the intersection like in each one DIFFERENCE. set1-set2 subtracts second set from first one

Question 36

Dictionary

Answer 36

With curly braces. Mutable. values accessed via get() or via key in square brackets {okay:slay,etc}. To get a certain index do class[studnet] and will print the info or set equal to something to change