Source code for deeppavlov.models.preprocessors.str_lower

# Copyright 2017 Neural Networks and Deep Learning lab, MIPT
#
# 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.

from typing import Union

from deeppavlov.core.common.registry import register
from deeppavlov.core.models.component import Component


[docs]@register('str_lower') class StrLower(Component): """Component for converting strings to lowercase at any level of lists nesting """ def __init__(self, *args, **kwargs): pass
[docs] def __call__(self, batch: Union[str, list, tuple]): """Recursively search for strings in a list and convert them to lowercase Args: batch: a string or a list containing strings at some level of nesting Returns: the same structure where all strings are converted to lowercase """ if isinstance(batch, (list, tuple)): return [self(line) for line in batch] else: return batch.lower()