/
_hf_folder.py
64 lines (56 loc) · 1.96 KB
/
_hf_folder.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
# 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.
"""Contain helper class to retrieve/store token from/to local cache."""
import os
from pathlib import Path
from typing import Optional
class HfFolder:
path_token = Path("~/.huggingface/token").expanduser()
@classmethod
def save_token(cls, token: str) -> None:
"""
Save token, creating folder as needed.
Args:
token (`str`):
The token to save to the [`HfFolder`]
"""
cls.path_token.parent.mkdir(exist_ok=True)
with cls.path_token.open("w+") as f:
f.write(token)
@classmethod
def get_token(cls) -> Optional[str]:
"""
Get token or None if not existent.
Note that a token can be also provided using the
`HUGGING_FACE_HUB_TOKEN` environment variable.
Returns:
`str` or `None`: The token, `None` if it doesn't exist.
"""
token: Optional[str] = os.environ.get("HUGGING_FACE_HUB_TOKEN")
if token is None:
try:
return cls.path_token.read_text()
except FileNotFoundError:
pass
return token
@classmethod
def delete_token(cls) -> None:
"""
Deletes the token from storage. Does not fail if token does not exist.
"""
try:
cls.path_token.unlink()
except FileNotFoundError:
pass