Issue a warning, or maybe ignore it or raise an exception.
message
Text of the warning message.
category
The Warning category subclass. Defaults to UserWarning.
stacklevel
How far up the call stack to make this warning appear. A value of 2 for
example attributes the warning to the caller of the code calling warn().
source
If supplied, the destroyed object which emitted a ResourceWarning
skip_file_prefixes
An optional tuple of module filename prefixes indicating frames to skip
during stacklevel computations for stack frame attribution.