bundles / numpy latest / numpy / seterrcall
function
numpy:seterrcall
source: /dev/numpy/build-install/usr/lib/python3.14/site-packages/numpy/_core/_ufunc_config.py :218
Signature
def seterrcall ( func ) Summary
Set the floating-point error callback function or log object.
Extended Summary
There are two ways to capture floating-point error messages. The first is to set the error-handler to 'call', using seterr. Then, set the function to call using this function.
The second is to set the error-handler to 'log', using seterr. Floating-point errors then trigger a call to the 'write' method of the provided object.
Parameters
func: callable f(err, flag) or object with write methodFunction to call upon floating-point errors ('call'-mode) or object whose 'write' method is used to log such message ('log'-mode).
The call function takes two arguments. The first is a string describing the type of error (such as "divide by zero", "overflow", "underflow", or "invalid value"), and the second is the status flag. The flag is a byte, whose four least-significant bits indicate the type of error, one of "divide", "over", "under", "invalid"
[0 0 0 0 divide over under invalid]In other words,
flags = divide + 2*over + 4*under + 8*invalid.If an object is provided, its write method should take one argument, a string.
Returns
h: callable, log instance or NoneThe old error handler.
Examples
Callback upon error:def err_handler(type, flag): print("Floating point error (%s), with flag %s" % (type, flag))✓
import numpy as np
✓orig_handler = np.seterrcall(err_handler) orig_err = np.seterr(all='call')✓
np.array([1, 2, 3]) / 0.0
✓np.seterrcall(orig_handler) np.seterr(**orig_err)✓
class Log: def write(self, msg): print("LOG: %s" % msg)✓
log = Log() saved_handler = np.seterrcall(log) save_err = np.seterr(all='log')✓
np.array([1, 2, 3]) / 0.0
✗np.seterrcall(orig_handler)
✗np.seterr(**orig_err)
✓See also
- geterr
- geterrcall
- seterr
Aliases
-
numpy.seterrcall