PYTHON DEFINITIONS

Question 1

Primitives

Answer 1

o Numbers
o Strings
o Booleans

Question 2

Numbers

Answer 2

values that allow us to do calculations and keep count.

Question 3

Strings

Answer 3

Are any sequence of characters (letters, spaces, numbers, or symbols). used to represent text or speech.

“Hello World”

Question 4

Boolean

Answer 4

represent one of two values, true and false.

Question 5

Operators

Answer 5

Are different symbols that represent an operation, such as the plus sign (+) as a symbol for addition.

Operations enable us to process our data, to transform it into something else.

Question 6

Operating in Program include

Answer 6

*Making calculations using arithmetic operators.

*Comparing information using comparison operators.

*Creating logical expressions using logical (aka Boolean) operators.

Question 7

Arithmetic Operators

Answer 7

Performs Calculations

+, -, *, /

Question 8

Comparison Operators

Answer 8

Comparing values and evaluate their relationship

Less than < — value to the left is less than the value to the right: 2 < 6

Greater than > — value to the left is more than the value to the right: 14 > 5

Equals == — value

Question 9

Tuple

Answer 9

is an ordered sequence of objects or characters separated by commas with parentheses on either side of the sequence.

mytuple= (7,”u”,”p”,1,”e”)

Question 10

Strings & Tuple

Answer 10

Both immutable / you can’t update the data once you create it.

Question 11

Variable

Answer 11

Stores your data information

mycoffee:

Question 12

Dictionaries

Answer 12

Stores data as a collections of key-value pairs.

menu= {“avocado toast”: 6, “carrot juice”:5, “blueberry muffin”]

menu = dictionary
avocado toast , 6 = key-value pair (comparing both vaules)

Question 13

Interger

Answer 13

Whole number without decimals

Question 14

Control Flow

Answer 14

Control flow is the order in which instructions are executed.

Question 15

List

Answer 15

Used to store multiple items in a single variable.

[2,4,6,8,10,12]

Question 16

Logical /Boolean Operators

Answer 16

*AND — both expressions evaluate to true, so the final result is true:
o ((4 > 1) AND (2 < 7)) is the same as (TRUE AND TRUE).

AND/ OR / NOT

Question 17

Float

Answer 17

Numbers with decimals

Question 18

Arrays

Answer 18

Is a variable that can store more than one method at a time.

It is used to store a collection of data.

EXAMPLE:

Variable = A
Value = 1-100

A (0), A (1), A (2), A (3)

Example:
append() = add an element at the end of the list
clear() = remove all copy
copy()= return all copies to a list

array (‘i’, [1,2,3,4,5,])
for numbers in numbers:
print(numbers)

NOTE: indexing values start from 0 and then 1

Question 19

Index

Answer 19

The INDEX function returns a value or the reference to a value from within a table or range.
()

Question 20

Advantages of an Array

Answer 20

Save memory in your system.

Array’s don’t slow down your memory or cache because the system recognize it as one big function rather than an individual “list” or “table.”

Arrays value are near each other in memory. It’s easy to transfer from Cache to CPU.

Question 21

Loops

Answer 21

A segment of code that executes multiple times.

Question 22

Iteration

Answer 22

the process in which the code is executed once.

Used in Loops

EXAMPLE:

numbers = [0, 254, 2, -1, 3]

for num in numbers:
if (num < 0):
print(“Negative number detected!”)
break
print(num)

OUTPUT:
0
254
2
Negative number detected!

Question 23

Function

Answer 23

A function is a block of code which only runs when it is called.

A function is a named sequence of instructions, packaged as a unit, that performs a specific task.

Question 24

Parameters

Answer 24

Parameters are variables that are defined in the function definition.

Example:

def_godfathermovie (cinematic, suspenseful, violent).

Question 25

Conditional Control

Answer 25

Allows the program to do different things in different scenarios.

Example:
If set to X, then do step 1, other wise do set 2.

Question 26

Three Major Control Structures

Answer 26

Conditional: “if some condition is met, then do X. Otherwise, do Y”.

Loop: “do something Z number of times” or “do something repeatedly until some condition is met”.

Exception: “do steps A, B, C. If an error occurs, stop, and do steps J, K, L”.

Question 27

Appending

Answer 27

When you add something to the end of a list.

Example:

my list - [“Nas”, “Jay” , “Pac”, “Biggie”]

mylist.append(“Eminem”)

my list - [“Nas”, “Jay” , “Pac”, “Biggie”,”Eminem]

Question 28

Pop

Answer 28

Removes Items from your list

Example:

my list - [“Nas”, “Jay” , “Pac”, “Biggie”]

mylist.pop(“Biggie”)

Question 29

Splice

Answer 29

Use an index to select a remove a specific item out of the list.

Example:

my list - [“Nas”, “Jay” , “Pac”, “Biggie”]

mylist.splice(1)

my list - my list - [“Nas”, “Pac”, “Biggie”]

Question 30

For Loop (Count Control Loop)

Answer 30

Executes a set of instructions for a specified number of times.

For Loop - is good when you know the number of times you are trying to run your variable.

Question 31

While Loop (Condition Control Loop)

Answer 31

When you know when a program should stop, but not the number of times it should repeat.

It repeats a set of instructions while that condition is true.

Question 32

For Each Loop (Collection-Controlled loops)

Answer 32

Repeat for each item in a collection

Question 33

Inifiite Loop

Answer 33

is a loop that never terminates.

Infinite loops result when the conditions of the loop prevent it from terminating

Question 34

Iteration

Answer 34

Repetitive execution of the same block of code over and over

Question 35

Indefinite iteration

Answer 35

Where the number of times the loop is executed depends on how many times a condition is met.

Question 36

Definite iteration

Answer 36

where the number of times the loop will be executed is defined in advance (usually based on the collection size).