diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/huggingface_hub/utils/_chunk_utils.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/huggingface_hub/utils/_chunk_utils.py | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/huggingface_hub/utils/_chunk_utils.py b/.venv/lib/python3.12/site-packages/huggingface_hub/utils/_chunk_utils.py new file mode 100644 index 00000000..b0af032a --- /dev/null +++ b/.venv/lib/python3.12/site-packages/huggingface_hub/utils/_chunk_utils.py @@ -0,0 +1,65 @@ +# coding=utf-8 +# Copyright 2022-present, the HuggingFace Inc. team. +# +# 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. +"""Contains a utility to iterate by chunks over an iterator.""" + +import itertools +from typing import Iterable, TypeVar + + +T = TypeVar("T") + + +def chunk_iterable(iterable: Iterable[T], chunk_size: int) -> Iterable[Iterable[T]]: + """Iterates over an iterator chunk by chunk. + + Taken from https://stackoverflow.com/a/8998040. + See also https://github.com/huggingface/huggingface_hub/pull/920#discussion_r938793088. + + Args: + iterable (`Iterable`): + The iterable on which we want to iterate. + chunk_size (`int`): + Size of the chunks. Must be a strictly positive integer (e.g. >0). + + Example: + + ```python + >>> from huggingface_hub.utils import chunk_iterable + + >>> for items in chunk_iterable(range(17), chunk_size=8): + ... print(items) + # [0, 1, 2, 3, 4, 5, 6, 7] + # [8, 9, 10, 11, 12, 13, 14, 15] + # [16] # smaller last chunk + ``` + + Raises: + [`ValueError`](https://docs.python.org/3/library/exceptions.html#ValueError) + If `chunk_size` <= 0. + + <Tip warning={true}> + The last chunk can be smaller than `chunk_size`. + </Tip> + """ + if not isinstance(chunk_size, int) or chunk_size <= 0: + raise ValueError("`chunk_size` must be a strictly positive integer (>0).") + + iterator = iter(iterable) + while True: + try: + next_item = next(iterator) + except StopIteration: + return + yield itertools.chain((next_item,), itertools.islice(iterator, chunk_size - 1)) |