2D list with while true loop

Loops, append() and break

Eg:

list_of_question = []
while True:
name = input("what is your name")
age = input("what is your age " )
platfrom = input("which os do u use ")
row = [name, age, platfrom]
list_of_question.append(row)
exit = input("Exit? y/n ")
if (exit.strip().lower()[0] == "y"):
break
print(list_of_question)

Add or Remove?

ask for a name on the list (make sure it is spelled correctly)
extract each row, one at a time, from the list
check the row to see if it contains the name
if the name is in the row, use the .remove() method to remove the whole row, not just the name.

Eg:

listOfShame = []

while True:
menu = input("Add or Remove?")

if(menu.strip().lower()[0]=="a"):

name = input("What is your name? ")
age = input("What is your age? ")
pref = input("What is your computer platform? ")

row = [name, age, pref]

listOfShame.append(row)


else:
name = input("What is the name of the record to delete?")
for row in listOfShame:

if name in row:
listOfShame.remove(row)

print(listOfShame)

Comments

WHAT IS Nesting

WHAT IS Nesting Nesting is where we put an if statement within an if statement using the power of indenting. The second if statement within the first if statement must be indented and its print statement needs to be indented one more time. EXAMPLE:

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)

PYTHON SYNTAX

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