week 5- advanced branching

Question 1

diagram code should include

Answer 1

input, output, branches + conditions, and other processes

Question 2

code style

Answer 2

readability, consistent naming conventions and file header comments

Question 3

basic ranges

Answer 3

use elif statements to check different conditions and use and/or

Question 4

should you compare floating point numbers with relational operators?

Answer 4

no

Question 5

can relational operators compare strings?

Answer 5

yes, only == or != or you can use to compare lengths

Question 6

how are strings compared

Answer 6

each number is converted to it’s ASCII value and characters are compared in order

Question 7

how are lists/tuples compared

Answer 7

with priority to the 1st element to determine T or F

Question 8

how are dictionaries compared

Answer 8

by key

Question 9

membership operators

Answer 9

in and not in, checks for presence of specific values in container and returns T or F

Question 10

substring

Answer 10

specific part of smaller string

Question 11

‘abc’ in ‘yakabc’ returns

Answer 11

true

Question 12

identity operators

Answer 12

is and is not, checks if operands reference the same object in memory

Question 13

object identity

Answer 13

memory address of object

Question 14

id(x)

Answer 14

checks object identity of x

Question 15

precedence rule

Answer 15

pemdas, relational operators, not, and, or

Question 16

common error

Answer 16

missing parenthesis, use them to improve readability and avoid mistakes

Question 17

code block

Answer 17

series of code grouped together, identified by indentation and new code blocks follow a statement ending in colon (:)

Question 18

if line is too long

Answer 18

you can wrap onto next line

Question 19

max characters per line

Answer 19

120, 80 is the recommended

Question 20

conditional expression

Answer 20

if and else in a single line, middle is evaluated first, best for assignment

Question 21

y = 0 if x<100 else x
what is y if x is 101?

Answer 21

x

Question 22

ternary expression

Answer 22

conditional expression with three operands (standard)