Programming Foundation Fundamentals

Programming can be defined as:

converting ideas into instructions that a computer can understand

Why is there no output for this program? def goodbye(): print("Bye")

we never called the goodbye function

What is the standard extension to use for a Python source code file?

.py

Which language does not use a hybrid compiler/interpreter approach?

C++

Typing "What is 2 plus 2?" into the Python prompt causes a...(what type of error?)

Syntax error

Which Python keyword is used to send back values from a function?

return

Why does VS Code need a Python interpreter to be specified?

to provide code suggestions

Which operator will you use to return true if two variables are different?

!=

Which character starts a comment in Python?

#

When working with the Terminal inside of VSCode, how can you expand the pane?

Click the up arrow

T/F: Python treats all numbers the same, regardless of numerical value.

False

T/F: The code that's contained inside of a function is often called the function's legs.

False, parameters

Which language is considered an interpreted language?

JavaScript

Which concern could be considered a disadvantage of Python under certain circumstances?

Python is a general-purpose language

T/F:In programming, a crash is when your program stops early or freezes because something unexpected happened.

True

How would you writhe the "Hello, world!" program in Python?

print("Hello, world!")

T/F: source code is written in rich text.

False

Although Python ignores empty lines, one place where whitespace does make a difference is inside of___

Strings

Which Mac application allows you to run commands and execute scripts in a command-line interface?

Terminal

T/F: to get Python code suggestions, you need to tell VS Code which Python interpreter to use.

True

If you were developing an application for an iPhone, which IDE would you use?

XCode

What is true regarding Python support in VS Code?

You need to install a VS Code extension to support Python.

What can the following function be used for? def mystery(x): if (x % 2 == 0): return("yes") else: return("no")

checking whether a number is even or odd

Which keyword does Python use to define a function?

def

Given the following code, how would you call the function? def hello(name): print("Hey,", name)

hello("John")

Which command will start the Python prompt on your computer?

python3

You have Python 3 installed. How will you run the Python code in the file "process.py" on the command-line prompt?

python3 process.py

What will the following code print? variable = "12" print(type(variable))

str

What does the void keyword mean when it is specified before a function definition?

the function does not return a value

What will the following code print? def compare(): print(5, "is greater than", 6)

this code will not print anything

If you were writing your source code in the JavaScript programming language, what file extension would you use to save your file?

.js

What does this expression evaluate to: 2 * 3 + 2 * 5

16

Which statement is true regarding Python on a Mac?

A Mac comes with a version of Python already installed.

Multiple statements grouped together are called a___

Block

Why doesn't a Python file execute when you double-click it?

Double-clicking does not run the Python interpreter on the source code

Which data type in Python represents a number with a decimal point?

Float

Which IDE feature allows you to get code suggestions while you are typing?

IntelliSense

What is the output of the following Python code? first_name = "Jeff" #first_name = "Sara" print(first_name)

Jeff

Why do computer instruction need to be sequential?

The order in which these instructions are executed is important

T/F: With if-else statements, we will always execute one of the code blocks depending on the result of the condition test.

True

This expression results in a syntax error (T/F): 2 (4*2)

True

When would a removal of white space be problematic?

removing the space after the "if" in an if-statement

What will the following condition print? if (num>=0): print(num) else: print(-1 * num)

the absolute value of num

What is the issue with this function as defined? def double(): print(x*2)

the number to double is not received

Why are there many programming languages?

to address many different computing needs

Any expression that breaks down to either true or false is called a conditional, or___

Boolean expression

What operator do you use to assign a value to a variable?

equals (=)

Which command exits from the Python command-line prompt?

exit( )

What is the type of the following value: '12'?

int

What will the following program print? def mult_inv(num): return 1/num result=mult_inv(3) print(result)

0.33333333

What is the output of the following program? number = 10 if number % 4 == 0: print(number, "is divisible by 4") print("All done")

All done

The code below, which is supposed to print the value of the variable x, is not working. Which category does the error fall under? x = 5 print("x")

Semantic error

Which tool is used to write source code?

a text editor