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# to you 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.

# pylint: disable=wildcard-import, unused-import
"""Symbol namespace used to register internal functions."""
# Use different version of SymbolBase
# When possible, use cython to speedup part of computation.
import sys as _sys
import os as _os

import numpy as np

try:
    if int(_os.environ.get("MXNET_ENABLE_CYTHON", True)) == 0:
        from .._ctypes.symbol import SymbolBase, _set_symbol_class
        from .._ctypes.symbol import _symbol_creator
    elif _sys.version_info >= (3, 0):
        from .._cy3.symbol import SymbolBase, _set_symbol_class
        from .._cy3.symbol import _symbol_creator
    else:
        from .._cy2.symbol import SymbolBase, _set_symbol_class
        from .._cy2.symbol import _symbol_creator
except ImportError:
    if int(_os.environ.get("MXNET_ENFORCE_CYTHON", False)) != 0:
        raise ImportError("Cython Module cannot be loaded but MXNET_ENFORCE_CYTHON=1")
    from .._ctypes.symbol import SymbolBase, _set_symbol_class
    from .._ctypes.symbol import _symbol_creator
from ..attribute import AttrScope
from ..base import _Null
from ..name import NameManager
try:
    from .gen__internal import * # pylint: disable=unused-wildcard-import
except ImportError:
    pass

__all__ = ['SymbolBase', '_set_symbol_class', '_symbol_creator']
