errstate#
- class scipy.special.errstate(**kwargs)#
- Context manager for special-function error handling. - Using an instance of - errstateas a context manager allows statements in that context to execute with a known error handling behavior. Upon entering the context the error handling is set with- seterr, and upon exiting it is restored to what it was before.- Parameters:
- kwargs{all, singular, underflow, overflow, slow, loss, no_result, domain, arg, other}
- Keyword arguments. The valid keywords are possible special-function errors. Each keyword should have a string value that defines the treatment for the particular type of error. Values must be ‘ignore’, ‘warn’, or ‘other’. See - seterrfor details.
 
 - See also - geterr
- get the current way of handling special-function errors 
- seterr
- set how special-function errors are handled 
- numpy.errstate
- similar numpy function for floating-point errors 
 - Examples - >>> import scipy.special as sc >>> from pytest import raises >>> sc.gammaln(0) inf >>> with sc.errstate(singular='raise'): ... with raises(sc.SpecialFunctionError): ... sc.gammaln(0) ... >>> sc.gammaln(0) inf - We can also raise on every category except one. - >>> with sc.errstate(all='raise', singular='ignore'): ... sc.gammaln(0) ... with raises(sc.SpecialFunctionError): ... sc.spence(-1) ... inf