Week 2

Question 1

What are assignment statements

Answer 1

Assignment statements use the assignment operator ‘=’ to define variables

Question 2

What do you need to define a variable?

Answer 2

• The name of the variable
• The initial value of the variable

Question 3

What are some invalid variable names?

Answer 3

• Starts with a number
• Contains a space
• Is a reserved word
• Contains symbols (other than _ )

Question 4

What are python arithmetic operations?

Answer 4

+, -, /, *
also powers= **
Floor division (ignores the fractional part) = //
Modulo division (remeainder)= %

Question 5

List python data types

Answer 5

• Integer
• Float
• String
• Complex numbers
• Boolean

Question 6

Define integer

Answer 6

Whole numbers

Question 7

Define float

Answer 7

Decimal numbers

Question 8

Define string

Answer 8

sequence of characters

Question 9

Define complex numbers

Answer 9

A number with a real and imaginary part

Question 10

Define boolean

Answer 10

Two possible values: True or False

Question 11

Is python dynamically typed or statically typed?

Answer 11

Dynamically typed

Question 12

What are constants

Answer 12

Constants are variables whose value does not change after it has been assigned an initial value. Python does not enforce constants but it is good programming practice to use all CAPS for variables that should be treated as constants.

Question 13

What is the None data type?

Answer 13

The None data type is Pythons version of null or no value. It is not zero, false or an empty string. It is a special data type: NoneType.