DV Module 2 Functions & Operators

Question 1

What print is an example of a

Answer 1

Function name

Question 2

Can you make your own functions in Python

Answer 2

Yes you can and the name should be significant to its use.

Question 3

Anything thing between quotes will be taken literally, not as code but as_____.

Answer 3

Data which is string

Question 4

A functions_name and a argument(s) forms a

Answer 4

function invocation

Question 5

Steps the code takes to use a Function(argument)

Answer 5

1. checks of the name is LEGAL]
2. allows you to invoke; make sure there is the correct amount of functions.
3. Leaves your code for a moment; jumps into the function you want to invoke.
4. Executes its code; causes the desired effect
5. returns to your code

Question 6

Two ways you can create a newline or and emptyline

Answer 6

empty print()
\n

Question 7

Why would one use , in an argument?

Answer 7

To put more then one argument in the string

Question 8

what is the keyword ‘end=’ used for

Code:
print(“My name is “, end=””)
print(“Monty Python.”)

Answer 8

to tell the code to keep the next argument on the same line of code.

Output:
My name is Monty Python.

Question 9

what is keyword ‘sep=’ used for

Code:
print(“My”, “name”, “is”, “Monty”, “Python.”, sep=”-“)

Answer 9

sep = separator. it is used to choose what separate’s the argument’s

Output:
print(“My”, “name”, “is”, “Monty”, “Python.”, sep=”-“)

Question 10

Can you mix more then one Keyword argument

Answer 10

yes you can mix keyword in one invocation

Question 11

Explane a Literal

Answer 11

Data whose values are determined by the literal itself

Question 12

Difference between an

Integers & Floats

Answer 12

Integers: devoid of fractional parts

Floats: Numbers that contain fractional parts

Question 13

11111111 how is this different in python to 11_111_111

Answer 13

They are the same and underscores are the only way that Python allows you to make integers easier to read.

Question 14

What symbols are used to represent an octal&hexadeciamal number

Answer 14

‘0o’ is used for octaldecimal numbers

‘0x’ is used for hexadecimal numbers

Question 15

what abbreviation would one use to shorten a long number such as 2_0000_0000?

Answer 15

2 * 10e8 or 2 * 10E8

Exponent: value after E must be an integer
Base: before E may or may not be an integer

Question 16

What are Boolean values used for?

Answer 16

they’re used to represent a very abstract value - truthfulness.

Question 17

What types of literals are the following four examples?

1. “1.5”
2. 2.0
3. 528
4. False

Answer 17

1. String
2. Float
3. Integer
4. Boolean

Question 18

What is unique about the Arithmetic Operation: division?
who would we negate this unique effect

code:
print(6 / 3)
output?

Answer 18

The result is always a float

to allow division to be integer we must use “//”

print(6//3)

Question 19

What does using the ‘%’ operator do

Code:
print(14 % 4)

Output:?

Answer 19

displace the remainder of the integers being divided

14 // 4 gives 3 → this is the integer quotient;
3 * 4 gives 12 → as a result of quotient and divisor multiplication;
14 - 12 gives 2 → this is the remainder.

Output = 2

in some other codes this is called the Modulo

Question 20

Operater Bindings

Ex 1:
Code:
print(9 % 6 % 2)
Output ?

Ex 2:
Code
print(2 ** 2 ** 3)
Output?

Answer 20

Ex 1
Division is Left sided binding going from left to right

Output: from left to right: first (9 % 6) gives 3, and then (3 % 2) gives 1;

Ex 2
the exponentiation operator uses right-sided binding.

Output: (2 ** 3) → 8; (2 ** 8) → 256

Question 21

List priorities of Operators

Answer 21

1. +, - unary A unary operator is an operator with only one operand, e.g., -1, or +3.
2. **
3. *, / , // , %
4. +, - binary A binary operator is an operator with two operands, e.g., 4 + 5, or 12 % 5.

Question 22

Exercise 1

What is the output of the following snippet?

print((2 ** 4), (2 * 4.), (2 * 4))

Answer 22

16 8.0 8

Question 23

Exercise 2

What is the output of the following snippet?

print((-2 / 4), (2 / 4), (2 // 4), (-2 // 4))

Answer 23

-0.5 0.5 0 -1

Question 24

Exercise 3

What is the output of the following snippet?

print((2 % -4), (2 % 4), (2 ** 3 ** 2))

Answer 24

-2 2 512