Week 2 Ch2

Question 1

What is an integer value?

Answer 1

A number value

Question 2

What is a floating point?

Answer 2

Decimal integer

Question 3

What is a string value?

Answer 3

String of characters

Question 4

In python strings belong to what type?

Answer 4

Str

Question 5

In Python integers belong to what type?

Answer 5

Int

Question 6

In python flouncing points belong to what type?

Answer 6

Float

Question 7

If numbers are in quotation marks. are they still strings?

Answer 7

Yes they are considered strings in Python

Question 8

What do commas do in Python?

Answer 8

Think it is a list of separated values

Question 9

What is a variable?

Answer 9

Name that refers to a value

Question 10

What is a common way to represent variables on paper?

Answer 10

Write the name with arrow pointing to variables value.

Question 11

Type of a variable is the type of ______it refers to

Answer 11

Value

Question 12

What do variable names have to begin with?

Answer 12

A letter

Question 13

If you give a variable an illegal name what happens ?

Answer 13

Syntax error

Question 14

Can variable names contain illegal characters?

Answer 14

No they cannot

Question 15

Can variable names contain Python keywords?

Answer 15

No they cannot

Question 16

What is a value?

Answer 16

Something a program manipulates

Question 17

What is an expression?

Answer 17

It is a combination of values, variables, and operators

Question 18

What is a statement?

Answer 18

Unit of code that Python interpreter can execute

Question 19

What is the difference between an expression and statement?

Answer 19

Expression has a value

Question 20

Order of evaluation depends on what?

Answer 20

Rules of precedence

Question 21

What has the highest precedence?

Answer 21

Parentheses

Question 22

What is after parentheses in the order of precedence?

Answer 22

It is exponents

Question 23

What precedence do multiplication and division have?

Answer 23

They have the same precedence

Question 24

Operators with the same precedence are evaluated in what order?

Answer 24

Left to right

Question 25

Can you perform mathematical operations on strings?

Answer 25

No

Question 26

What does the plus operator + do?

Answer 26

It concatenates. Joins strings together.

Question 27

What are two statements?

Answer 27

Assignment and print

Question 28

Does the assignment statement produce an output

Answer 28

No it does not

Question 29

When the interpreter displays the value of an expression, what format does it use?

Answer 29

Uses same format you would use to enter a value.

Question 30

What will the print statement do with strings in quotation marks?

Answer 30

Display string without quotations.

Question 31

What are operators?

Answer 31

Special symbols that represent computations like addition

Question 32

What is this **?

Answer 32

Means exponentation

Question 33

What does the * operator do on strings?

Answer 33

It performs repetition. One of the operands has to be a string and the other has to be an integer.

Question 34

What is one of the most useful things about programming languages?

Answer 34

Ability to take small building blocks and compose them.

Question 35

Where can you put line # comments ?

Answer 35

At the start and end of a line

Question 36

Should comments be used to explain why you did something a certain way?

Answer 36

Yes they should