Conditions and Branching

Question 1

Conditional statements - comparison operators

Answer 1

equal: ==
not equal: !=
greater than: >
less than: <
greater than or equal to: >=
less than or equal to: <=

Question 2

Comparison operators example

Answer 2

Use Equality sign to compare the strings
“ACDC”==”Michael Jackson”
“ACDC” == “Michael Jackson”
False

Question 3

Branching - IF statements

Answer 3

If statement example

age = 19
#age = 18

#expression that can be true or false
if age > 18:

    #within an indent, we have the expression that is run if the condition is true
    print("you can enter" )

#The statements after the if statement will run regardless if the condition is true or false 
print("move on")

Question 4

Else statements

Answer 4

The else statement runs a block of code if none of the conditions are True before this else statement.
# Else statement example
​
age = 18
# age = 19
​
if age > 18:
    print("you can enter" )
else:
    print("go see Meat Loaf" )

print(“move on”)
go see Meat Loaf
move on

Question 5

elif statement

Answer 5

The elif statement, short for else if, allows us to check additional conditions if the condition statements before it are False. 
# Elif statment example
​
age = 18
​
if age > 18:
    print("you can enter" )
elif age == 18:
    print("go see Pink Floyd")
else:
    print("go see Meat Loaf" )

print(“move on”)
go see Pink Floyd
move on

Question 6

Logical operators

Answer 6

Logical operators allow you to combine or modify conditions.

and
or
not

Question 7

Logical operator - “AND”

album_year = 1980

if(album_year > 1979) and (album_year < 1990):
print (“Album year was in between 1980 and 1989”)

print(“”)
print(“Do Stuff..”)

Answer 7

Album year was in between 1980 and 1989

Do Stuff..

Question 8

logical operator - “OR”
album_year = 1990

if(album_year < 1980) or (album_year > 1989):
print (“Album was not made in the 1980’s”)
else:
print(“The Album was made in the 1980’s “)

Answer 8

Album was not made in the 1980’s

Question 9

logical operator - “NOT”

album_year = 1983

if not (album_year == '1984'):
    print ("Album year is not 1984")

Answer 9

Album year is not 1984