Control Structures

Question 1

Boolean

Answer 1

Binary variable, True or False

Question 2

==

Answer 2

Creates boolean variable
ex: print(2==3) –> False

Question 3

!=

Answer 3

Not equal operator
ex: print(1 != 1) –> False

Question 4

> ,<

Answer 4

Determine if one float/integer is greater than or less than the other
ex: print(7 > 5) –>
True
print(10 < 10) –>
False

Question 5

> =,<=

Answer 5

Determine if one float/integer is greater or equal to than or less than or equal to the other
ex: print(7 >= 5) –>
True
print(10 <= 10) –>
True

Question 6

Lexicographically

Answer 6

How strings are compared, a=1 e=5, etc.
ex: print(“Annie” > “Andy”) –> True

Question 7

if

Answer 7

Runs code if a certain condition holds True. Statement within are indented
ex: if 10 > 5:
print(“10 greater than 5”)

Question 8

Can if statements be nested?

Answer 8

True
ex: num = 12
if num > 5:
print(“Bigger than 5”)
if num <=47:
print(“Between 5 and 47”) –>
Bigger than 5
Between 5 and 47

Question 9

else

Answer 9

Runs code when the if statement is False
ex:
x = 4
if x == 5:
print(“Yes”)
else:
print(“No”)

Question 10

elif

Answer 10

else if, used to chain else if statements
ex:
if num == 1:
print(“One”)
elif num == 2:
print(“Two”)
else:
print(“Something else”)

Question 11

and

Answer 11

Evaluates True only if both statements are true
ex: print(1 == 1 and 2 == 2) –> True
print(1 == 1 and 2 == 3) –> False

Question 12

or

Answer 12

Evaluates True if one or both statements are true, only evaluated False if both statements are false
ex:print(1 == 1 or 2 == 2) –> True
print(1 == 1 or 2 == 3) –> True

Question 13

Not

Answer 13

Inverts argument
ex: print(not 1==1) –> False

Question 14

== comes before and/or in order of operations

Answer 14

True

Question 15

[]

Answer 15

Creates list
ex: words = [“Hello” , “World” , “!”]

Question 16

What number is used to index the first number in a list?

Answer 16

0
ex: print(words[0])

Question 17

All items need to be the same type in a list

Answer 17

False
ex: things = [“string”, 0, [1, 2, number], 4.56]
#note how list contains strings, integers, floats, lists, and variables!

Question 18

Strings can be indexed like lists

Answer 18

True
ex: str = “Hello world!”
print(str[6]) –>
w
#spaces, ‘ ‘, count as a list item

Question 19

You cannot change specific items in lists

Answer 19

False
nums = [7, 7, 7, 7, 7]
nums[2] = 5
print(nums) –>
[7, 7, 5, 7, 7]

Question 20

in

Answer 20

Operator to determine if an item appears in a list
ex: print(“spam” in words) –>
True

Question 21

‘not’ in ‘in’ operator

Answer 21

To check if an item is not in a list
ex:
print(not 4 in nums)
print(4 not in nums)
#note multiple ways

Question 22

.append

Answer 22

Method that adds an item to the end of an existing list
ex:
nums = [1, 2, 3]
nums.append(4)
print(nums) –>
[1, 2, 3, 4]

Question 23

len()

Answer 23

Function that give number of items in list
ex:
nums = [1, 3, 5, 2, 4]
print(len(nums)) –>
5
#starts at 1, not 0

Question 24

.insert

Answer 24

Method that allows you to insert a new item anywhere in a list
ex:
words = [“Python”, “fun”]
words.insert(1, “is”)
print(words)

Question 25

.index

Answer 25

Method that finds first occurrence of item in list and returns index ex: list= [4 ,1 ,2 ,4] list.index(1)--> 0

Question 26

max()

Answer 26

Returns list item with maximum value

Question 27

min()

Answer 27

Returns list item with minimum value

Question 28

.count

Answer 28

Method that returns a count of how many times an item occurs in a list

Question 29

.remove

Answer 29

Method that removes an object from a list

Question 30

.reverse

Answer 30

Method that reverses items in a list