def _get_param_names(cls):
        # noinspection PyPep8
        """Get parameter names for the estimator

        See http://scikit-learn.org/stable/modules/generated/sklearn.base.BaseEstimator.html
        and sklearn/base.py for more information.
        """

        # fetch the constructor or the original constructor before
        # deprecation wrapping if any
        init = getattr(cls.__init__, 'deprecated_original', cls.__init__)
        if init is object.__init__:
            # No explicit constructor to introspect
            return []

        # introspect the constructor arguments to find the model parameters
        # to represent
        init_signature = signature(init)
        # Consider the constructor parameters excluding 'self'
        parameters = [p for p in init_signature.parameters.values()
                      if p.name != 'self' and p.kind != p.VAR_KEYWORD]
        for p in parameters:
            if p.kind == p.VAR_POSITIONAL:
                raise RuntimeError("scikit-learn estimators should always "
                                   "specify their parameters in the signature"
                                   " of their __init__ (no varargs)."
                                   " %s with constructor %s doesn't "
                                   " follow this convention."
                                   % (cls, init_signature))
        # Extract and sort argument names excluding 'self'
        return sorted([p.name for p in parameters])
Get parameter names for the estimator

        See http://scikit-learn.org/stable/modules/generated/sklearn.base.BaseEstimator.html
        and sklearn/base.py for more information.
        
pyod/models/base.py