LSR/env/lib/python3.6/site-packages/control/exception.py
2020-06-04 17:24:47 +02:00

71 lines
2.5 KiB
Python

# exception.py - exception definitions for the control package
#
# Author: Richard M. Murray
# Date: 31 May 2010
#
# This file contains definitions of standard exceptions for the control package
#
# Copyright (c) 2010 by California Institute of Technology
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of the California Institute of Technology nor
# the names of its contributors may be used to endorse or promote
# products derived from this software without specific prior
# written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CALTECH
# OR THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $Id$
class ControlSlycot(ImportError):
"""Exception for Slycot import. Used when we can't import a function
from the slycot package"""
pass
class ControlDimension(ValueError):
"""Raised when dimensions of system objects are not correct"""
pass
class ControlArgument(TypeError):
"""Raised when arguments to a function are not correct"""
pass
class ControlMIMONotImplemented(NotImplementedError):
"""Function is not currently implemented for MIMO systems"""
pass
class ControlNotImplemented(NotImplementedError):
"""Functionality is not yet implemented"""
pass
# Utility function to see if slycot is installed
def slycot_check():
try:
import slycot
except:
return False
else:
return True