anvil/anvil/type_utils.py

40 lines
1.3 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import types
def make_bool(val):
if isinstance(val, bool):
return val
if isinstance(val, types.NoneType):
return False
sval = str(val).lower().strip()
if sval in ['true', '1', 'on', 'yes', 't']:
return True
if sval in ['0', 'false', 'off', 'no', 'f', '', 'none']:
return False
raise TypeError("Unable to convert %r to a boolean" % (val))
def obj_name(obj):
if isinstance(obj, (types.TypeType,
types.ModuleType,
types.FunctionType,
types.LambdaType)):
return str(obj.__name__)
return obj_name(obj.__class__)