How to use while true/while loop on python

[christing]

May i ask how i can use while true / while loop to write the code.

i = "APPLE"
while True:
if i == "APPLE":
print（i）


i get Syntax Error form above code.

[SheeppOSU]

1. From what I see, there are no indentations
2. There is a space between "print" and the parenthesis calling the function
3. I don't know if this is what you want, but it will continue to print even after i == 'apple'
Here's a better way to do this

while i != 'apple': #Will continue to loop until i is equal to "apple"
    pass #pass so there are no syntax errors
print(i) #When the while loop finishes, print will be executed

You could also use a break (Though I think the first example of code is better)

while True:
    if i == apple:
        print(i)
        break #Break out of the while loop

[perfringo]

What do you want to accomplish?

This code will endlessly print APPLE:

i = 'APPLE'
while True:
    if i == 'APPLE'
        print(i)         # Ctrl + C to cancel

Python has built-in help, type help('while') into your interactive interpreter and you will have official documentation at your disposal (press Q to quit help).

[christing]

What do you want to accomplish?

This code will endlessly print APPLE:

i = 'APPLE'
while True:
    if i == 'APPLE'
        print(i)         # Ctrl + C to cancel

Python has built-in help, type help('while') into your interactive interpreter and you will have official documentation at your disposal (press Q to quit help).

if system output send me "APPLE" i will get APPLE else system will reply "error data"

[perfringo]

if system output send me "APPLE" i will get APPLE else system will reply "error data"

To remove ambiguity please define 'system output', 'I will get' and 'system reply'