Executing a python script (way to long to include here) I wrote leads to a warning message. I don’t know at which line in my code this gets raised. How can I get this information?
Furthermore, what does this mean exactly? In fact, I didn’t know I was using a masked array of some sort?
/usr/lib/pymodules/python2.7/numpy/ma/core.py:3785: UserWarning: Warning: converting a masked element to nan. warnings.warn("Warning: converting a masked element to nan.")
You can use the
warnings module to convert warnings to exceptions. The simplest method is called
simplefilter. Here’s an example; the code that generates the warning is in func2b(), so there is a nontrival traceback.
import warnings def func1(): print("func1") def func2(): func2b() print("func2") def func2b(): warnings.warn("uh oh") def func3(): print("func3") if __name__ == "__main__": # Comment the following line to see the default behavior. warnings.simplefilter('error', UserWarning) func1() func2() func3()
When the line containing the call to
simplefilter is commented out, the output is
func1 warning_to_exception.py:13: UserWarning: uh oh warnings.warn("uh oh") func2 func3
With that line included, you get a traceback:
func1 Traceback (most recent call last): File "warning_to_exception.py", line 23, in <module> func2() File "warning_to_exception.py", line 9, in func2 func2b() File "warning_to_exception.py", line 13, in func2b warnings.warn("uh oh") UserWarning: uh oh