Deprecated the module IPython.utils.warn

IPython/utils/warn.py

@@ -1,57 +1,60 b''
 # encoding: utf-8
 """
 Utilities for warnings.  Shoudn't we just use the built in warnings module.
 """
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 from __future__ import print_function
 
 import sys
 
 from IPython.utils import io
 
+from warning import warn
+
+warn("The module IPython.utils.warn is deprecated, use the standard warnings module instead", DeprecationWarning)
 
 def warn(msg,level=2,exit_val=1):
     """Standard warning printer. Gives formatting consistency.
 
     Output is sent to io.stderr (sys.stderr by default).
 
     Options:
 
     -level(2): allows finer control:
       0 -> Do nothing, dummy function.
       1 -> Print message.
       2 -> Print 'WARNING:' + message. (Default level).
       3 -> Print 'ERROR:' + message.
       4 -> Print 'FATAL ERROR:' + message and trigger a sys.exit(exit_val).
 
     -exit_val (1): exit value returned by sys.exit() for a level 4
     warning. Ignored for all other levels."""
-
+    
+    warn("The module IPython.utils.warn is deprecated, use the standard warnings module instead", DeprecationWarning)
     if level>0:
         header = ['','','WARNING: ','ERROR: ','FATAL ERROR: ']
         print(header[level], msg, sep='', file=io.stderr)
         if level == 4:
             print('Exiting.\n', file=io.stderr)
             sys.exit(exit_val)
 
             
 def info(msg):
     """Equivalent to warn(msg,level=1)."""
 
     warn(msg,level=1)
 
     
 def error(msg):
     """Equivalent to warn(msg,level=3)."""
 
     warn(msg,level=3)
 
     
 def fatal(msg,exit_val=1):
     """Equivalent to warn(msg,exit_val=exit_val,level=4)."""
 
     warn(msg,exit_val=exit_val,level=4)
-