is it possible to dynamically call a function via cli in a python script

It's not a good practise to invoke a method via argument, it can be a security fault

You should use something like python test.py 'call_function_one' [...]

And then in your script, you have to get the argument and do :

if (arg[0] == 'call_function_one'):
  function_one(parameters)

An other thing, you can directly parse your argument in your main, it's a common way to use argument_parser, and then calling your functions :)

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