NotFittedError#

exception sklearn.exceptions.NotFittedError#

异常类,如果在拟合之前使用估计器,则引发该异常。

该类继承自ValueError和AttributeError,以帮助异常处理和向后兼容性。

Examples

>>> from sklearn.svm import LinearSVC
>>> from sklearn.exceptions import NotFittedError
>>> try:
...     LinearSVC().predict([[1, 2], [2, 3], [3, 4]])
... except NotFittedError as e:
...     print(repr(e))
NotFittedError("This LinearSVC instance is not fitted yet. Call 'fit' with
appropriate arguments before using this estimator."...)

Changed in version 0.18: 从sklearn.utils.validation移动。