Question

我想练习tensorflow 2，但是我在anaconda环境中安装它的尝试失败。

我的问题是：如何安装tensorflow 2？如果可以在anaconda环境中完成，对我来说似乎更方便。只要可以使用tensorflow 2，就不需要理解下面的错误消息。

首先，我发现使用pip而不是conda
第二，pip给我带来很多错误：每当我感觉到自己转过身来时，就会出现另一个错误……我认为最好的是（在py36环境中））： pip install --upgrade --ignore-installed wrapt tensorflow==2.0.0-beta1。的确，在卸载了tb-nightly，notebook和jupyter之后，此命令运行时没有明显的错误/警告。但是，python中的import tensorflow给了我这个错误：

Traceback (most recent call last):
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 24, in swig_import_helper
    _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/imp.py", line 243, in load_module
    return load_dynamic(name, filename, file)
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/imp.py", line 343, in load_dynamic
    return _load(spec)
ImportError: dlopen(/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/../libtensorflow_framework.2.dylib

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/__init__.py", line 40, in <module>
    from tensorflow.python.tools import module_util as _module_util
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/__init__.py", line 49, in <module>
    from tensorflow.python import pywrap_tensorflow
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow.py", line 74, in <module>
    raise ImportError(msg)
ImportError: Traceback (most recent call last):
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/pywrap_tensorflow_internal.py", line 24, in swig_import_helper
    _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/imp.py", line 243, in load_module
    return load_dynamic(name, filename, file)
  File "/Users/steph/anaconda/envs/py36/lib/python3.6/imp.py", line 343, in load_dynamic
    return _load(spec)
ImportError: dlopen(/Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /Users/steph/anaconda/envs/py36/lib/python3.6/site-packages/tensorflow/python/../libtensorflow_framework.2.dylib


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.```

Answer 1

可能您在发布here时遇到了同样的问题..您可以尝试解决此MacOS系统升级问题，或者尝试在将用于代码的virtualenv中安装tensorflow

编辑：

要在您的虚拟环境（本例中为anaconda）中安装软件包，您需要激活已经创建的环境（请参考anaconda docs进行使用）并使用

$ conda activate myenv
(myenv) $ pip install tensorflow

Answer 2

该Beta是预发布版本，尚不稳定，因此您必须使用--pre标志

pip install --pre tensorflow==2.0.0-beta1

安装tensorflow 2有问题

2 个答案: