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Question 1

These are the programming errors

Answer 1

Bug

Question 2

First Bug

Answer 2

Harvard University, 1947

Mark II was having consistent errors

A literal bug – a moth

Disrupted the electronics of the computer

Question 3

Types of Errors

Answer 3

Syntax Error
Semantic Error

Question 4

Syntax Error is also called as?

Answer 4

Parsing Error

Question 5

Caused by improper format or syntax in Python

Answer 5

Syntax Error

Question 6

Usually pointed out by the interpreter during translation

Answer 6

Syntax Error

Question 7

Samples of Syntax Error (4)

Answer 7

Typographical errors
Improper case
Incorrect indentation
Missing or incorrect arguments or symbols

Question 8

Interpretation Time (Syntax Error)

Answer 8

Happens when you ask Python to run your program

The interpreter does not understand a line of code
(It does not understand what you want it to do)

Question 9

Happens when the syntax is correct – no error messages produced – but the program logic is not, thus resulting to incorrect output or result

Answer 9

Semantic Error

Question 10

May cause the program to crash

Answer 10

Semantic Error

Question 11

Usually more difficult to find and may sometimes need a debugger to find it

Answer 11

Semantic Error

Question 12

Runtime (Semantic Error)

Answer 12

Happens after the code has been interpreted and the computer executes it

Execution may stop and display an error or exception message

Question 13

Possible Reasons for Runtime Errors (5)

Answer 13

Incorrect program logic
Incorrect user input
Lack of error handling code
Network error (necessary resources might be unavailable)
Hardware error

Question 14

The process of finding and correcting errors or bugs in the program code

Answer 14

Debugging

Question 15

How to avoid debugging? (3)

Answer 15

Understand the problem
Start Small
Keep improving your code

Question 16

Helpful for finding and correcting bugs that are difficult to find

Answer 16

Debugger

Question 17

In the IDLE, ___ is the Python Debugger and is part of the standard library

Answer 17

pdb

Question 18

Other python IDEs also has _____ debuggers

Answer 18

built-in

Question 19

The order of execution of statements is _____, by default – from top to bottom

Answer 19

linear

Question 20

The order of executing statements in a program

Answer 20

Flow of Control

Question 21

The _____ data type is fundamental to the flow of control

Answer 21

Boolean

Question 22

Remember that it has two (2) possible values:

Answer 22

True or False

Question 23

Set by relational operators (6):

Answer 23

==, ! =, >, <, >=, <=

Question 24

Part of every programming language are statements that can tweak or modify the said order, which allows programmers to (2):

Answer 24

Decide whether or not to execute a particular statement (or code block)

Repeatedly perform a particular statement (or code block)

Question 25

How do humans make decisions? (4)

Answer 25

Based on experience Based on calculations or predictions Based on other’s suggestions/recommendations Based on gut or feelings

Question 26

Decision-making by computers (3)

Answer 26

Get the current or actual value of something Compare this to a desired value Act accordingly (based on the comparison)

Question 27

Decision Control Structures (5)

Answer 27

Conditional Statement If Statement If... Else Statement Making Multiple Comparisonsa Elif Structure

Question 28

Conditional Statement is also called a?

Answer 28

branch

Question 29

Piece of code that is executed under certain conditions (If the condition is not met, this will not be executed)

Answer 29

Conditional Statement

Question 30

Helps a program to have the ability to react on different states that resulted from computations and/or inputs

Answer 30

Conditional Statement

Question 31

The most basic decision control structure

Answer 31

If Statement

Question 32

Executes a line or block of code if the condition is met – if the Boolean expression returns True

Answer 32

If Statement

Question 33

The general format of an if statement is:

Answer 33

if condition: statement/s

Question 34

the __ indicates the end of the condition

Answer 34

: or colon

Question 35

the code block is _____ with respect to the rest of the code: to clearly identify which part of the code depends on the current condition

Answer 35

indented

Question 36

Used when you want an alternative course of action(s) if the condition in the if statement was not met (The else clause is executed in this case)

Answer 36

If... Else Statement

Question 37

The general format of an if...else statement is:

Answer 37

if condition: statement/s 1 else: statement/s 2

Question 38

Series of statements is also called as?

Answer 38

code block

Question 39

It is necessary when dealing with multiple requirements

Answer 39

Making Multiple Comparisons

Question 40

In programming, logical operators – ___, __, ___ – are combined with relational operators to do multiple comparisons

Answer 40

and, or, not

Question 41

Made up from the combination of else and if

Answer 41

Elif Structure

Question 42

Used when if...else is not enough to handle all possible conditions or courses of actions

Answer 42

Elif Structure

Question 43

The general format of elif structure is:

Answer 43

if condition: statement/s 1 elif condition: statement/s 2 else: statement/s 3

Question 44

You may have more than one elif statement. True or False

Answer 44

True

Question 45

You may or may not have else when you use elif. True or False

Answer 45

True

Question 46

If there are ___________, the interpreter would check all the conditions within those statements – they are treated as individual, unrelated conditions

Answer 46

multiple if statements

Question 47

Using ____ “tells” the interpreter that the conditions from if, the following elif statements, and else are connected and related to each other

Answer 47

elif

Question 48

Handles multi-level decision-making

Answer 48

Nested decision statements

Question 49

Process of making decisions in different levels

Answer 49

Nesting

Question 50

Repetitive statements = ____ statements

Answer 50

loop statements

Question 51

repetition is viewed as a _____

Answer 51

circle

Question 52

Iterative Statements rely on __________ ____________ when to stop looping

Answer 52

relational statements

Question 53

Without them (relational statements), loops would go on forever – ______ _____

Answer 53

infinite loop

Question 54

Python has two primitive kinds of iterative statements:

Answer 54

for loop while loop

Question 55

Each loop has the following (sometimes, only implicitly): (4)

Answer 55

A control variable or loop counter The initial value The loop continuation condition The increment or decrement

Question 56

Statements under this will be executed repeatedly while the condition returns True (Once the condition returns False, the line after the loop will be executed)

Answer 56

While Loop

Question 57

While Loop format:

Answer 57

while condition: statement/s

Question 58

Used for looping sequences – list, string, number range

Answer 58

For Loop

Question 59

For Loop format:

Answer 59

for iterating_var in sequence: statement/s

Question 60

This returns a sequence of numbers

Answer 60

Range Function

Question 61

By default, range function starts at _, and increments by _

Answer 61

starts at 0 increments by 1

Question 62

Range Function does not work on _____ _____ numbers

Answer 62

floating point numbers

Question 63

May be a number or variable with numerical value (3)

Answer 63

range (value) range (start, stop) range (start, stop, step)

Question 64

A loop in which the number of times it is going to execute is known in advance before entering the loop

Answer 64

Definite Loop

Question 65

The number of loops or iterations depend on the user input

Answer 65

Indefinite Loop

Question 66

In python, the _______ function ends with a new line

Answer 66

print ( )

Question 67

Stops the loop even when the looping continuation condition still returns True and executes the statement/s after the loop However, it must be under an ___ statement (which is also within the loop)

Answer 67

Break Statement an If statement

Question 68

Similar to break, it is part of an if statement within a loop

Answer 68

Continue Statement

Question 69

Processing proceeds to the next element in the sequence instead of ending the loop completely

Answer 69

Continue Statement

Question 70

Technically, the element(s) that will meet the condition in the if statement will be skipped in the processing in the loop

Answer 70

Continue Statement

Question 71

Used when a statement is required syntactically but you do not want any code to execute – a null statement

Answer 71

Pass Statement

Question 72

Similar to the continue clause, but executes the code below it (which is also inside the if code block where the pass statement is included)

Answer 72

Pass Statement

Question 73

Useful to place for parts of code that you will put some code, but haven’t written yet – to avoid error (This is because the interpreter ignores the pass statement and continues with the rest of the code)

Answer 73

Pass Statement

Question 74

Executes a code when all the iterations have been completed, and NOT indefinitely terminated by a break statement

Answer 74

Else Statement

Question 75

The program exits the loop only after the else block is executed

Answer 75

Else Statement

Question 76

Seems unnecessary, but may serve as a flag that the loop was finished

Answer 76

Else Statement

Question 77

Allow us to execute a statement or block of code multiple times

Answer 77

Control Structure

Question 78

Meaning the start value is greater than the stop value It is required to have a negative step value

Answer 78

Reverse Range

Question 79

It brings control out of the loop

Answer 79

Break

Question 80

It returns control back to the beginning of the loop

Answer 80

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