Python Basics Quiz

What is a variable?

• Variables are those which delete programs

• A variable is an entity which stores some values

• Values stored in a variable can't be changed

• A variable is something used to repeat steps

Answer explanation

Variables are entities which store values.

Values stored in a variable can be changed.

Tags

Variables

"def" keyword is used in python to-

• def is a variable

• define a new conditional variable

• use conditional

• define a new function

Answer explanation

def is used to define a new function

Syntax for a new function definition is-

def functionName(attribute):

<functionDefinition>

return <returnValue>

enemy = hero.findNearestEnemy( )

What is findNearestEnemy( ) ?

• It is a null function

• It is a function of the object hero called "method"

• a variable

• function definition

Answer explanation

findNearestEnemy( ) is the function defined to be used by the "hero" object.

Functions defined for the objects are called "methods".

findNearestEnemy( ) is a method.

enemy = hero.findNearestEnemy( )

in the variable enemy what is being stored?

• The name of the nearest enemy if present

• The nearest enemy object if present

• it is a conditional to check if enemy is present

• hero.findNearestEnemy( ) is a method to find the nearest enemy

Answer explanation

hero.findNearestEnemy( ) is the method of the hero object which stores the name of the nearest enemy(a string) if found in the "enemy" variable.

example:

>> enemy = hero.findNearestEnemy( )

>> print(enemy)

>> Jazz #This is the name of the enemy which is a string

Which of the following symbols is used in the beginning of a line to create a single line comment in Python?

• &&

• @

• *

• #

Answer explanation

The "#" symbol is used in the beginning of a line to create a single line comment in Python.

Example:-

# hi there, today is a wonderful day

def goToDistance(x, y):

hero.moveXY(___)

Fill in the blanks if using the goToDistance( ) function the hero needs to move to (34, 50)

What is a syntax?

• Syntaxes are not written in a code to explain inner code workings

• The symbols used in computer programming are called syntaxes

• The rule following which different computer programs are written.

• All are correct

Answer explanation

The rules following which computer programs are written are call syntaxes.

Different programming languages (C, C++, Python etc.) follow different rules hence differ by their syntaxes

Choose the correct alternative out of the following

• while loops can be used to create infinite loops only

• Python if else conditionals cannot be used to compare values

• Python is nothing but english

• The inputs to the functions or methods are called arguments

Answer explanation

Python functions or method of objects may or may not require inputs.

When the function is called, the input they require is called an "argument".

What will be the output of the following code snippet? <please ignore the parenthesis>

name1 = "jazz"

name 2 = "madonna"

if name1 != name2:

print("No")

else:

print("Yes")

• No

• madonna

• Yes

• Compilation Error

Answer explanation

The output will be "no" as the strings are not equal.

cleave = hero.isReadyToCleave( )

• The cleave variable is checking if cleave is ready

• cleave is not a variable, it is a conditional here

• The confirms that hero is not ready to cleave

• cleave is a variable storing True/False, depending on the hero to be ready to cleave or not

Answer explanation

hero.isReadyToCleave( ) is a method which returns True if the hero is ready to cleave, else it returns False.

This return value (True/False) is stored in the variable named cleave in the following code-

>> cleave = hero.isReadyToCleave( )