Print only the message on warnings

Question

I'm issuing lots of warnings in a validator, and I'd like to suppress everything in stdout except the message that is supplied to warnings.warn().

I.e., now I see this:

./file.py:123: UserWarning: My looong warning message some Python code 

I'd like to see this:

My looong warning message 

Edit 2: Overriding warnings.showwarning() turned out to work:

def _warning(     message,     category = UserWarning,     filename = '',     lineno = -1):     print(message) ... warnings.showwarning = _warning warnings.warn('foo') 

Answer 1

There is always monkeypatching:

import warnings  def custom_formatwarning(msg, *args, **kwargs):     # ignore everything except the message     return str(msg) + '\n'  warnings.formatwarning = custom_formatwarning warnings.warn("achtung") 

Answer 2

Monkeypatch warnings.showwarning() with your own custom function.