Class LinAlgError

numpy/linalg/_linalg.py:114–140

Generic Python-exception-derived object raised by linalg functions. General purpose exception class, derived from Python's ValueError class, programmatically raised in linalg functions when a Linear Algebra-related condition would prevent further correct execution of the functi

@set_module('numpy.linalg')
class LinAlgError(ValueError):
    """
    Generic Python-exception-derived object raised by linalg functions.

    General purpose exception class, derived from Python's ValueError
    class, programmatically raised in linalg functions when a Linear
    Algebra-related condition would prevent further correct execution of the
    function.

    Parameters
    ----------
    None

    Examples
    --------
    >>> from numpy import linalg as LA
    >>> LA.inv(np.zeros((2,2)))
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "...linalg.py", line 350,
        in inv return wrap(solve(a, identity(a.shape[0], dtype=a.dtype)))
      File "...linalg.py", line 249,
        in solve
        raise LinAlgError('Singular matrix')
    numpy.linalg.LinAlgError: Singular matrix

    """


def _raise_linalgerror_singular(err, flag):