python - 无法从 'parse_version' 导入名称 'sklearn.utils.fixes'

Question

我在使用 sklearn 时遇到了严重的问题。特别是，在执行以下操作时:

from sklearn.linear_model import LinearRegression

我收到以下错误:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-8-a35af2a4e137> in <module>
----> 1 from sklearn.linear_model import LinearRegression

~/anaconda3/lib/python3.7/site-packages/sklearn/__init__.py in <module>
     78     from . import _distributor_init  # noqa: F401
     79     from . import __check_build  # noqa: F401
---> 80     from .base import clone
     81     from .utils._show_versions import show_versions
     82 

~/anaconda3/lib/python3.7/site-packages/sklearn/base.py in <module>
     19 from . import __version__
     20 from ._config import get_config
---> 21 from .utils import _IS_32BIT
     22 from .utils.validation import check_X_y
     23 from .utils.validation import check_array

~/anaconda3/lib/python3.7/site-packages/sklearn/utils/__init__.py in <module>
     21 
     22 from .murmurhash import murmurhash3_32
---> 23 from .class_weight import compute_class_weight, compute_sample_weight
     24 from . import _joblib
     25 from ..exceptions import DataConversionWarning

~/anaconda3/lib/python3.7/site-packages/sklearn/utils/class_weight.py in <module>
      5 import numpy as np
      6 
----> 7 from .validation import _deprecate_positional_args
      8 
      9 

~/anaconda3/lib/python3.7/site-packages/sklearn/utils/validation.py in <module>
     23 from contextlib import suppress
     24 
---> 25 from .fixes import _object_dtype_isnan, parse_version
     26 from .. import get_config as _get_config
     27 from ..exceptions import NonBLASDotWarning, PositiveSpectrumWarning

ImportError: cannot import name 'parse_version' from 'sklearn.utils.fixes' (/Users/federiconutarelli/anaconda3/lib/python3.7/site-packages/sklearn/utils/fixes.py)

我无法修复，因为在 fix.py 中我可以看到

def _parse_version(version_string):
    version = []
    for x in version_string.split('.'):
        try:
            version.append(int(x))
        except ValueError:
            # x may be of the form dev-1ea1592
            version.append(x)
    return tuple(version)

在我看来，这与 parse_version 相同。为什么会发生此错误？谁能帮帮我吗？
谢谢你们，
费德里科

Answer 1

您可以通过创建新的 conda 环境来解决此问题。有时，某些冲突会阻止软件包正确运行。