How to detect an undefined method?

[Manfred Lotz]

On 3/27/22 18:57, Kirill Ratkin wrote:
> Hi
> 
> You can get all methods of your object and check the method you want to call is
> there or not.
> 
> |methods = [method for method in dir(<your_object>) if
> callable(getattr(<your_object>, method))] if 'method_you_need' in methods:
> <your_object>.<method_you_need> // BR |
> 

I don't understand how this may help. Assume somebody has a codebase of 15T
lines of Python code. How do you want to apply your method?

But perhaps I overlook things.

-- 
Manfred


> 27.03.2022 12:24, Manfred Lotz пишет:
>> Let's say I have a Python app and have used an undefined method somewhere. Let
>> us further assume I have not detected it thru my tests.
>>
>> Is there a way to detect it before deploying the app? pylint doesn't notice it.
>>
>>
>> Minimal example:
>>
>> #!/usr/bin/env python3
>>
>> import logging
>> from logging import Logger
>> from random import randrange
>>
>> def main():
>>      """
>>      Below logger.err gives
>>
>>      'Logger' object has no attribute 'err'
>>      """
>>
>>      logger = logging.getLogger('sample')
>>      logger.setLevel(logging.DEBUG)
>>      handler = logging.StreamHandler()
>>      logger.addHandler(handler)
>>
>>      num = randrange(0,1000)
>>      if num == 0:
>>          logger.err("got zero")
>>      else:
>>          logger.info(f'got a positive integer: {num}')
>>
>> if __name__ == "__main__":
>>      main()
>>
>>
>>