Finding a default parameter value programmatically

[untanglereality]

For finding the default value of a parameter programmatically, we can use the signature function in the inspect module to get a signature object. Then using the parameters on the object, we can obtain the parameters of the function, and access the default values through indexing.

import inspect

sig = inspect.signature(KNeighborsClassifier)
parameter_name, value = str(sig.parameters["n_neighbors"]).split("=")

print(f"The default value of {parameter_name} is {value}.")
>>> The default value of n_neighbors is 5.

Source

[ArturoAmorQ]

That is indeed another more-programmatic yet clearer option. Thanks for sharing!