Maths Functions

Question 1

Power Of

Answer 1

**

Question 2

Round Down

Answer 2

//

Question 3

Remainder

Answer 3

%

Question 4

Precedence

Answer 4

• before +

Question 5

Strings use escape characters

Answer 5

x = “Her name's "Elizabeth"”

Question 6

id(varName)

Answer 6

This gives the address

Question 7

type(varName)

Answer 7

This gives the type, like ‘int’

Question 8

Name 7 types

Answer 8

bool, int, float, string, tuple, list and dict

Question 9

Casting

Answer 9

varName = int(10.5)

Question 10

Multiline string

Answer 10

’’’ OR ‘’’\ The 2nd version escapes the carriage return

Question 11

Define a Tuple

Answer 11

varTuple = (1,2,3,4)

Question 12

Define a List

Answer 12

varList = [1,2,3,4)

Question 13

Define a Dict

Answer 13

varDict = {‘a’:1, ‘b’:2}

Question 14

Get items 2 and 3 from a list

Answer 14

varList[1:2]

Question 15

While

Answer 15

While a<100:
print(a)
a+=1

Question 16

For data in

Answer 16

For data in [1,2,3,4]:

print (data)

Question 17

For data in

Answer 17

s
t
r
i
n
g

Question 18

enumerate

Answer 18

for key, data in enumerate(‘strings’):

Question 19

try syntax

Answer 19

tuple = (1,2,3,4,5)
try:
    tuple.append(6)
except AttributeError as e:
    print("error", e)
except IOError as e:
    print("ioerror", e)
else:
    for each in tuple:
        print tuple

Question 20

When is an exception thrown

Answer 20

As soon as the error is hit

Question 21

loop - break and continue

Answer 21

break breaks out of the loop

continue jump to next iteration

Question 22

Does “else” also work in for loops

Answer 22

yes, always gets run assuming successful loop through

Question 23

How do you work back to front on a list

Answer 23

list[-1]

Question 24

length of a list

Answer 24

print(len(listName))

Question 25

How do you 2 step through a list

Answer 25

list[2:4:2]

Question 26

How do you 2 step through a list to the end, no matter where it is?

Answer 26

list[2::2]

Question 27

How do you 3 step through a list from the start to item 4 ?

Answer 27

list[:3:3]