无法导入 tensorflow - 无法加载本机 tensorflow 运行时

Question

我通过 Anaconda 使用 tensorflow 已经有一段时间了。今天我的电脑死机了，我不得不重新安装Anaconda，今天安装tensorflow后，每次尝试导入它，我都会收到以下错误-

(base) C:\Users\Pragyaditya Das>python
Python 3.7.6 (default, Jan  8 2020, 20:23:39) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as t
Traceback (most recent call last):
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
    _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: DLL load failed: The specified module could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow\__init__.py", line 101, in <module>
    from tensorflow_core import *
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\__init__.py", line 40, in <module>
    from tensorflow.python.tools import module_util as _module_util
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow\__init__.py", line 50, in __getattr__
    module = self._load()
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow\__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\__init__.py", line 49, in <module>
    from tensorflow.python import pywrap_tensorflow
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow.py", line 74, in <module>
    raise ImportError(msg)
ImportError: Traceback (most recent call last):
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "C:\Users\Pragyaditya Das\anaconda3\lib\site-packages\tensorflow_core\python\pywrap_tensorflow_internal.py", line 24, in swig_import_helper
    _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "C:\Users\Pragyaditya Das\anaconda3\lib\imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: DLL load failed: The specified module could not be found.


Failed to load the native TensorFlow runtime.

See https://www.tensorflow.org/install/errors

for some common reasons and solutions.  Include the entire stack trace
above this error message when asking for help.

当我执行pip freeze | findstr tensorflow 时，我会得到以下详细信息 - tensorflow==2.1.0 tensorflow-estimator==2.1.0

我在这里和 tensorflow 的 github repo 中浏览了各种答案，但徒劳无功。

提前感谢任何帮助。

Answer 1

在等待回复时，我能够自己解决错误。 分步指南如下：

1. 安装 VS 2017，tensorflow 不使用它，但拥有它有助于顺利安装 CUDA 工具包。
2. 从 Windows 设备管理器更新 NVDIA 驱动程序。
3. 下载并安装 CUDA 工具包（10.1 版）。
4. 下载并解压缩 CUDnn 7.6.5。将提取的文件复制到 C 盘的文件夹中。
5. 将~\NVIDIA GPU Computing Toolkit\CUDA\v10.1\bin、~\NVIDIA GPU Computing Toolkit\CUDA\v10.1\bin 和cudnn-10.1-windows10-x64-v7.6.4.38\cuda\bin 添加到PATH

在上述步骤后执行import tensorflow as tf 解决了问题。