intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 65 insertions, 0 deletions

diff --git a/contrib/python/ipython/py2/IPython/utils/warn.py b/contrib/python/ipython/py2/IPython/utils/warn.py
new file mode 100644
index 00000000000..dd4852227ba
--- /dev/null
+++ b/contrib/python/ipython/py2/IPython/utils/warn.py
@@ -0,0 +1,65 @@
+# 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
+import warnings
+
+warnings.warn("The module IPython.utils.warn is deprecated since IPython 4.0, use the standard warnings module instead", DeprecationWarning)
+
+def warn(msg,level=2,exit_val=1):
+    """Deprecated
+
+    Standard warning printer. Gives formatting consistency.
+
+    Output is sent to sys.stderr.
+
+    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."""
+    
+    warnings.warn("The module IPython.utils.warn is deprecated since IPython 4.0, use the standard warnings module instead", DeprecationWarning)
+    if level>0:
+        header = ['','','WARNING: ','ERROR: ','FATAL ERROR: ']
+        print(header[level], msg, sep='', file=sys.stderr)
+        if level == 4:
+            print('Exiting.\n', file=sys.stderr)
+            sys.exit(exit_val)
+
+            
+def info(msg):
+    """Deprecated 
+    
+    Equivalent to warn(msg,level=1)."""
+
+    warn(msg,level=1)
+
+    
+def error(msg):
+    """Deprecated 
+    
+    Equivalent to warn(msg,level=3)."""
+
+    warn(msg,level=3)
+
+    
+def fatal(msg,exit_val=1):
+    """Deprecated 
+    
+    Equivalent to warn(msg,exit_val=exit_val,level=4)."""
+
+    warn(msg,exit_val=exit_val,level=4)