numpy._globals:_NoValueType

Extended Summary

The instance of this class may be used as the default value assigned to a keyword if no other obvious default (e.g., None) is suitable,

Common reasons for using this keyword are:

• A new keyword is added to a function, and that function forwards its inputs to another function or method which can be defined outside of NumPy. For example, np.std(x) calls x.std, so when a keepdims keyword was added that could only be forwarded if the user explicitly specified keepdims; downstream array libraries may not have added the same keyword, so adding x.std(..., keepdims=keepdims) unconditionally could have broken previously working code.

• A keyword is being deprecated, and a deprecation warning must only be emitted when the keyword is used.