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# 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)
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