executing code only once outside a while loop

Question

can anybody help me please to make sure the API_Duplicate outside of the while loops only runs once?

My methodology is:

for while MarketIsActive == 'True' to run continuously, listening for updates and assigning it to API_Data.

outside of the while loop, the API_duplicate = API_Data only needs to execute the once to assign its value.

this allows the second while loop, while API_Duplicate != API_Data to perform and take over the responsibility of assigning the API_duplicate = API_Data within the loop itself.

while MarketIsActive == 'True':
    API_data = 'API_endpoint'

API_duplicate = API_Data

    while API_Duplicate != API_Data
        API_duplicate = API_Data

        # extra code

Thank you.

I wrote it like that because I didn't want the duplicate to update itself more than once, so I thought it would be best to exclude it from the first while loop — Andrew English
– Andrew English, Commented May 22, 2020 at 20:13
an if statement wouldn't execute because the "API_Duplicate" assignment is still executing before it? — Andrew English
– Andrew English, Commented May 22, 2020 at 21:25

Igor Rivin · Accepted Answer · 2020-05-22 20:06:23Z

1

Put your code inside a class, have the class have a count variable, and assign API_duplicate via a setter method, something like:

def set_dup(self):
    if self.count < 1:
        self.API_duplicate=self.API_data
        self.count +=1

answered May 22, 2020 at 20:06

Igor Rivin

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1 Comment

Andrew English Over a year ago

thank you for solving this issue, but the second while loop does not identify the API_duplicate.

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