WHAT IS ELIF

What the elif is this?

The elif command (which stands for 'elseif') allows you to ask 2, 3, 4 or 142 questions using the same input! This command must be in a certain place. You can have as many elif statements as you want, but they must go in between if and else and have the same indentation. The print statements in your elif command need to line up with the indent of the other print statements.

EXAMPLE :

print("SECURE LOGIN")

username = input("Username > ")

password = input("Password> ")

if username == "mark" and password == "password":

print("Welcome Mark!")

elif username == "suzanne":

print("Hey there Suzanne!")

else:

print("Go away!")

Comments

IF AND ELSE STATEMENT

If Statements These statements are a bit like asking a question. You are telling the computer: if something is true, then do this specific block of code. Double equals ( == ) is asking the computer to compare if these two things are exactly the same. EXAMPLE : myName = input("What's your name?: ") if myName == "David": What is else? IF the condition is not met with the if statement, then we want the computer to do the else part instead. Likewise, if the condition is met in the if statement, then the else bit is ignored by the computer. The else statement must be the first thing unindented after the if statement and in line with it EXAMPLE : myName = input("What's your name?: ") if myName == "David": print("Welcome Dude!") print("You're just the baldest dude I've ever seen...

FOR LOOP , RANGE

FOR LOOP A while loop is perfect to use when we don't know how many times we want the loop to repeat. If we have an idea of how many times we want the loop to repeat, we can use a for loop to loop code in exactly the same way the while loop did. EXAMPLE : for counter in range(10): print(counter) RANGE The range function creates a list of numbers in the range you create. If you only give it one number, it will start at 0 and move to a state where the final number is one less than the number in the brackets. In this case, the final number would be 9 . EXAMPLE : total = 0 for number in range(100) : total += number print(total)

Parameters , Call the Subroutine , Adding More Arguments

Parameters In a subroutine, the () are for the argument (FYI argument is another word for parameter). These are the pieces of information we pass to the code. These can be variable names that are made up for the first time within the argument () . EXAMPLE : def whichCake(ingredient): if ingredient == "chocolate": print("Mmm, chocolate cake is amazing") elif ingredient == "broccoli": print("You what mate?!") else: print("Yeah, that's great I suppose...") How do we call the subroutine? We call it in the same way as before. However, instead of leaving the () blank, we send the code a message. EXAMPLE : def whichCake("chocolate"): if ingredient == "chocolate": print("Mmm, chocolate cake is amazing") elif ingredient == "broccoli": print("You what mate?!") else: print("Yeah, that's great I suppose...") Addin...

PYTHON SYNTAX

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