seterr — SciPy v1.15.3 Manual (original) (raw)
scipy.special.
scipy.special.seterr(**kwargs)#
Set how special-function errors are handled.
Parameters:
all{‘ignore’, ‘warn’ ‘raise’}, optional
Set treatment for all type of special-function errors at once. The options are:
- ‘ignore’ Take no action when the error occurs
- ‘warn’ Print a SpecialFunctionWarning when the error occurs (via the Python warnings module)
- ‘raise’ Raise a SpecialFunctionError when the error occurs.
The default is to not change the current behavior. If behaviors for additional categories of special-function errors are specified, then all is applied first, followed by the additional categories.
singular{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for singularities.
underflow{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for underflow.
overflow{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for overflow.
slow{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for slow convergence.
loss{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for loss of accuracy.
no_result{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for failing to find a result.
domain{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for an invalid argument to a function.
arg{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for an invalid parameter to a function.
other{‘ignore’, ‘warn’, ‘raise’}, optional
Treatment for an unknown error.
Returns:
olderrdict
Dictionary containing the old settings.
See also
get the current way of handling special-function errors
context manager for special-function error handling
similar numpy function for floating-point errors
Examples
import scipy.special as sc from pytest import raises sc.gammaln(0) inf olderr = sc.seterr(singular='raise') with raises(sc.SpecialFunctionError): ... sc.gammaln(0) ... _ = sc.seterr(**olderr)
We can also raise for every category except one.
olderr = sc.seterr(all='raise', singular='ignore') sc.gammaln(0) inf with raises(sc.SpecialFunctionError): ... sc.spence(-1) ... _ = sc.seterr(**olderr)