Python Basics

Code Examples 

If Examples

#simple example 1 - note the use of "double equals" to test equality

answer = 12

if answer == 12:

   print("Correct!")

#use of >, >=, <, <=, !=

score = 5

if score >= 5:

    print("You have passed.")

correctAnswer = 4

userAnswer = 6

if userAnswer != correctAnswer:

    print("You are wrong")

#another example - again, note the use of "double equals" to test equality

answer = num1 + num2

userAnswer = int(input("Please enter the sum of num1 and num2: "))

if userAnswer == answer:

   print("You're correct, well done")

If Else Examples

#example 1

answer = 5

if answer == 5:

   print("Correct")

else:

   print("Incorrect")

#example 2

#this example could be VERY, VERY useful when completing your project this trimester!

answer = num1 + num2

userAnswer = int(input("Please enter the sum of num1 and num2: "))

if userAnswer == answer:

   print("You're correct, well done")

   score +=1

else:

   print("Bzzzt, wrong!")

   score -=1

If / Else If /Else Examples

#example 1

answer = int(input("Enter a number: "))

if answer > 10:

   print("Your guess is too large!")

elif answer < 10:

   print("Your guess is too small!")

else:

   print("You entered the number 10. You guessed correct.")

#example 2 - note the use of quotes is needed around strings but not numbers

#this example could be VERY, VERY useful when completing your project this trimester!

difficulty = input("Please enter one of the following to choose difficulty - [E]asy, [M]edium, or [D]ifficult"):

if difficulty == "E":

   print("You've chosen Easy.")

   maximum = 10

elif difficulty == "M":

   print("You've chosen Medium.")

   maximum = 50

else:

   print("You've chosen Difficult.")

   maximum = 100

#example 3

age = int(input("Enter your age: "))

if age > 18:

   print("You are old enough to vote.")

elif age == 18:

   print("You are just old enough to vote.")

elif age == 17:

   print("You are nearly old enough to vote.")

elif age == 16:

   print("You will be allowed to vote in two years.")

else:

   print("You won't be allowed to vote for a while.")

#example 4

accessLevel = 0

userName = input("Enter your userName: "))

if userName == "Mr S":

   print("You have gained top level clearance into this system.")

   accessLevel = 3

elif userName == "Captain":

   print("You have gained mid-level clearance into this system.")

   accessLevel = 2

elif userName == "Cadet":

   print("You have gained low-level clearance into this system.")

   accessLevel = 1

else:

   print("You have gained bottom-level clearance into this system.")

   accessLevel = 0