67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
import platform
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import os
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from typing import Union
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from pathlib import Path
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from urllib.parse import urlparse
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import torch
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import tensorboard
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from packaging import version
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from pytorch_lightning import _logger as log
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# we want this for tf.io.gfile, which if tf is installed gives full tf,
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# otherwise gives a pruned down version which works for some file backends but
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# not all
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from tensorboard.compat import tf
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gfile = tf.io.gfile
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pathlike = Union[Path, str]
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# older version of tensorboard had buggy gfile compatibility layers
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# only support remote cloud paths if newer
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def load(path_or_url: str, map_location=None):
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if urlparse(path_or_url).scheme == '' or Path(path_or_url).drive: # no scheme or with a drive letter
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return torch.load(path_or_url, map_location=map_location)
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return torch.hub.load_state_dict_from_url(path_or_url, map_location=map_location)
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def modern_gfile():
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"""Check the version number of tensorboard.
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Cheking to see if it has the gfile compatibility layers needed for remote
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file operations
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"""
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tb_version = version.parse(tensorboard.version.VERSION)
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modern_gfile = tb_version >= version.parse("2.0")
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return modern_gfile
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def cloud_open(path: pathlike, mode: str, newline: str = None):
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if platform.system() == "Windows":
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log.debug(
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"gfile does not handle newlines correctly on windows so remote files are not"
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" supported falling back to normal local file open."
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)
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return open(path, mode, newline=newline)
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if not modern_gfile():
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log.debug(
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"tenosrboard.compat gfile does not work on older versions "
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"of tensorboard for remote files, using normal local file open."
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)
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return open(path, mode, newline=newline)
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try:
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return gfile.GFile(path, mode)
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except NotImplementedError as e:
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# minimal dependencies are installed and only local files will work
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return open(path, mode, newline=newline)
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def makedirs(path: pathlike):
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if hasattr(gfile, "makedirs") and modern_gfile():
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return gfile.makedirs(str(path))
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# otherwise minimal dependencies are installed and only local files will work
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return os.makedirs(path, exist_ok=True)
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