Comp lecture 2 - Variable types

Question 0

Literals

Answer 0

Literals are constant values

Question 1

Variable

Answer 1

Variables are names for values

Question 2

Operator

Answer 2

An Operator is in between two arguments and performs a particular operation on the two arguments

Question 3

Assignment

Answer 3

When the variable is assigned or equated to a value

Question 4

Syntax rules for python’s variable names

Answer 4

• the first character should always be an underscore or an alphabet
• following characters can be alphabets, digits or underscores
• meaningful names that make the program readable to others

Question 5

What is the PEMDAS rule and where is it used?

Answer 5

Parentheses > exponents > (multiplication,division) > (addition, subtraction)
It used for evaluating expressions constituting of more than one operators - tells us which operation to perform first

Question 6

What is an object? What is the characteristic of an object and how does this characteristic help us?

Answer 6

Every value python can compute is an object.
Every object has a type.
And this tells us the different operations we can perform on the object