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98 lines
2.3 KiB
98 lines
2.3 KiB
# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Data reading and writing.
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Authors
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* qingenz123@126.com (Qingen ZHAO) 2022
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"""
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import os
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import pickle
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def save_pkl(obj, file):
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"""Save an object in pkl format.
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Arguments
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---------
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obj : object
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Object to save in pkl format
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file : str
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Path to the output file
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sampling_rate : int
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Sampling rate of the audio file, TODO: this is not used?
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Example
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-------
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>>> tmpfile = os.path.join(getfixture('tmpdir'), "example.pkl")
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>>> save_pkl([1, 2, 3, 4, 5], tmpfile)
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>>> load_pkl(tmpfile)
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[1, 2, 3, 4, 5]
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"""
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with open(file, "wb") as f:
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pickle.dump(obj, f)
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def load_pickle(pickle_path):
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"""Utility function for loading .pkl pickle files.
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Arguments
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---------
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pickle_path : str
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Path to pickle file.
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Returns
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-------
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out : object
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Python object loaded from pickle.
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"""
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with open(pickle_path, "rb") as f:
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out = pickle.load(f)
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return out
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def load_pkl(file):
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"""Loads a pkl file.
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For an example, see `save_pkl`.
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Arguments
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---------
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file : str
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Path to the input pkl file.
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Returns
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-------
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The loaded object.
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"""
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# Deals with the situation where two processes are trying
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# to access the same label dictionary by creating a lock
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count = 100
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while count > 0:
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if os.path.isfile(file + ".lock"):
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time.sleep(1)
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count -= 1
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else:
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break
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try:
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open(file + ".lock", "w").close()
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with open(file, "rb") as f:
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return pickle.load(f)
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finally:
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if os.path.isfile(file + ".lock"):
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os.remove(file + ".lock")
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