Python Tensorflow公司；正确导入，但在尝试使用时引发异常

我无法使用tensorflow。它似乎安装和导入正确。然而，当我调用它时，解释器抛出一系列扩展的异常，下面给出了节略

我用的是OS X El Capitan v10.11.6 Macbook Pro（15英寸，2009年年中） 2.8 GHz Intel Core Duo，带 8 GB 1067 MHz DDR3和 NVIDIA GeForce 9400M 256MB

Python 3.7.1

更新Jupyter笔记本、Anaconda、pip等

代码（在Jupyter笔记本上）

给出了这些例外情况

ERROR:root:Internal Python error in the inspect module.
Below is the traceback from this internal error.

ERROR:root:Internal Python error in the inspect module.
Below is the traceback from this internal error.

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/anaconda3/lib/python3.7/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 "/anaconda3/lib/python3.7/imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "/anaconda3/lib/python3.7/imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 3267, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-4-5e683e1280ff>", line 2, in <module>
    mnist = tf.keras.datasets.mnist
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 50, in __getattr__
    module = self._load()
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/__init__.py", line 42, in <module>
    from . _api.v2 import audio
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/_api/v2/audio/__init__.py", line 10, in <module>
    from tensorflow.python.ops.gen_audio_ops import decode_wav
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/ops/gen_audio_ops.py", line 10, in <module>
    from tensorflow.python import pywrap_tensorflow as _pywrap_tensorflow
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 50, in __getattr__
    module = self._load()
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/__init__.py", line 49, in <module>
    from tensorflow.python import pywrap_tensorflow
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 74, in <module>
    raise ImportError(msg)
ImportError: Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/anaconda3/lib/python3.7/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 "/anaconda3/lib/python3.7/imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "/anaconda3/lib/python3.7/imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 2018, in showtraceback
    stb = value._render_traceback_()
AttributeError: 'ImportError' object has no attribute '_render_traceback_'

During handling of the above exception, another exception occurred:

...

# A lot more exceptions between these lines

...

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py in <module>
     57 
---> 58   from tensorflow.python.pywrap_tensorflow_internal import *
     59   from tensorflow.python.pywrap_tensorflow_internal import __version__

/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py in <module>
     27             return _mod
---> 28     _pywrap_tensorflow_internal = swig_import_helper()
     29     del swig_import_helper

/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py in swig_import_helper()
     23             try:
---> 24                 _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
     25             finally:

/anaconda3/lib/python3.7/imp.py in load_module(name, file, filename, details)
    241         else:
--> 242             return load_dynamic(name, filename, file)
    243     elif type_ == PKG_DIRECTORY:

/anaconda3/lib/python3.7/imp.py in load_dynamic(name, path, file)
    341             name=name, loader=loader, origin=path)
--> 342         return _load(spec)
    343 

ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib

During handling of the above exception, another exception occurred:

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2017                         # in the engines. This should return a list of strings.
-> 2018                         stb = value._render_traceback_()
   2019                     except Exception:

AttributeError: 'ImportError' object has no attribute '_render_traceback_'

During handling of the above exception, another exception occurred:

TypeError                                 Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in run_code(self, code_obj, result, async_)
   3282             if result is not None:
   3283                 result.error_in_exec = sys.exc_info()[1]
-> 3284             self.showtraceback(running_compiled_code=True)
   3285         else:
   3286             outflag = False

/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2019                     except Exception:
   2020                         stb = self.InteractiveTB.structured_traceback(etype,
-> 2021                                             value, tb, tb_offset=tb_offset)
   2022 
   2023                     self._showtraceback(etype, value, stb)

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1377         self.tb = tb
   1378         return FormattedTB.structured_traceback(
-> 1379             self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1380 
   1381 

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1280             # Verbose modes need a full traceback
   1281             return VerboseTB.structured_traceback(
-> 1282                 self, etype, value, tb, tb_offset, number_of_lines_of_context
   1283             )
   1284         elif mode == 'Minimal':

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, evalue, etb, tb_offset, number_of_lines_of_context)
   1142         exception = self.get_parts_of_chained_exception(evalue)
   1143         if exception:
-> 1144             formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
   1145             etype, evalue, etb = exception
   1146         else:

TypeError: can only concatenate str (not "list") to str

ERROR:root:inspect模块中的内部Python错误。
下面是此内部错误的回溯。
错误：root:inspect模块中存在内部Python错误。
下面是此内部错误的回溯。
回溯（最近一次呼叫最后一次）：
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/pywrap_tensorflow.py”，第58行，在
从tensorflow.python.pywrap\u tensorflow\u内部导入*
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/pywrap_tensorflow_internal.py”，第28行，在
_pywrap\u tensorflow\u internal=swig\u import\u helper（）
swig\u import\u helper中的文件“/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/pywrap\u tensorflow\u internal.py”，第24行
_mod=imp.load_模块（“pywrap_tensorflow_internal”，fp，路径名，描述）
加载模块中的文件“/anaconda3/lib/python3.7/imp.py”，第242行
返回加载动态（名称、文件名、文件）
文件“/anaconda3/lib/python3.7/imp.py”，第342行，动态加载
返回负载（规格）
ImportError:dlopen（/anaconda3/lib/python3.7/site-packages/tensorflow\u core/python//u pywrap\u tensorflow\u internal.so，6）：未找到符号：\u SecKeyCopyExternalRepresentation
引用自：/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/。/libtensorflow\u framework.2.dylib
预期位于：/System/Library/Frameworks/Security.framework/Versions/A/Security
在/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/./libtensorflow\u framework.2.dylib中
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“/anaconda3/lib/python3.7/site packages/IPython/core/interactiveshell.py”，第3267行，运行代码
exec（代码对象、self.user\u全局、self.user\n）
文件“”，第2行，在
mnist=tf.keras.datasets.mnist
文件“/anaconda3/lib/python3.7/site packages/tensorflow/_init__.py”，第50行，在_getattr中__
模块=自身。_加载（）
文件“/anaconda3/lib/python3.7/site packages/tensorflow/_init__.py”，第44行，加载
模块=_importlib.import_模块（自身名称）
导入模块中的文件“/anaconda3/lib/python3.7/importlib/_init__uu.py”，第127行
return _bootstrap._gcd_import（名称[级别：]，包，级别）
文件“”，第1006行，在\u gcd\u导入中
文件“”，第983行，在_find_和_load中
文件“”，第953行，在“查找”和“加载”中解锁
文件“”，第219行，在“调用”中，删除了“帧”
文件“”，第1006行，在\u gcd\u导入中
文件“”，第983行，在_find_和_load中
文件“”，第967行，在“查找”和“加载”中解锁
文件“”，第677行，在\u加载\u解锁
exec_模块中第728行的文件“”
文件“”，第219行，在“调用”中，删除了“帧”
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/__init__.py”，第42行，在
从。_api.v2导入音频
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/_api/v2/audio/_init__.py”，第10行，在
从tensorflow.python.ops.gen_audio_ops导入解码_wav
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/ops/gen_audio_ops.py”，第10行，在
从tensorflow.python导入pywrap\u tensorflow作为_pywrap\u tensorflow
文件“/anaconda3/lib/python3.7/site packages/tensorflow/_init__.py”，第50行，在_getattr中__
模块=自身。_加载（）
文件“/anaconda3/lib/python3.7/site packages/tensorflow/_init__.py”，第44行，加载
模块=_importlib.import_模块（自身名称）
导入模块中的文件“/anaconda3/lib/python3.7/importlib/_init__uu.py”，第127行
return _bootstrap._gcd_import（名称[级别：]，包，级别）
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/_init__.py”，第49行，在
从tensorflow.python导入pywrap\u tensorflow
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/pywrap_tensorflow.py”，第74行，在
提高效率（msg）
ImportError:回溯（最近一次呼叫上次）：
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/pywrap_tensorflow.py”，第58行，在
从tensorflow.python.pywrap\u tensorflow\u内部导入*
文件“/anaconda3/lib/python3.7/site packages/tensorflow_core/python/pywrap_tensorflow_internal.py”，第28行，在
_pywrap\u tensorflow\u internal=swig\u import\u helper（）
swig\u import\u helper中的文件“/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/pywrap\u tensorflow\u internal.py”，第24行
_mod=imp.load_模块（“pywrap_tensorflow_internal”，fp，路径名，描述）
加载模块中的文件“/anaconda3/lib/python3.7/imp.py”，第242行
返回加载动态（名称、文件名、文件）
文件“/anaconda3/lib/python3.7/imp.py”，第342行，动态加载
返回负载（规格）
ImportError:dlopen（/anaconda3/lib/python3.7/site-packages/tensorflow\u core/python//u pywrap\u tensorflow\u internal.so，6）：未找到符号：\u SecKeyCopyExternalRepresentation
引用自：/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/。/libtensorflow\u framework.2.dylib
预期位于：/System/Library/Frameworks/Security.framework/Versions/A/Security
在/anaconda3/lib/python3.7/site packages/tensorflow\u core/python/./libtensorflow\u framework.2.dylib中
未能加载本机TensorFlow运行时。
看见https://www.tensorflow.org/install/errors
由于一些常见的原因和解决方案。包括整个堆栈跟踪
以上是请求帮助时的错误消息。
在处理上述异常期间，发生了另一个异常：
回溯（最近一次呼叫最后一次）：
文件“/anaconda3/lib/python3.7/site-pack
ERROR:root:Internal Python error in the inspect module.
Below is the traceback from this internal error.

ERROR:root:Internal Python error in the inspect module.
Below is the traceback from this internal error.

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/anaconda3/lib/python3.7/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 "/anaconda3/lib/python3.7/imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "/anaconda3/lib/python3.7/imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 3267, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-4-5e683e1280ff>", line 2, in <module>
    mnist = tf.keras.datasets.mnist
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 50, in __getattr__
    module = self._load()
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/__init__.py", line 42, in <module>
    from . _api.v2 import audio
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/_api/v2/audio/__init__.py", line 10, in <module>
    from tensorflow.python.ops.gen_audio_ops import decode_wav
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/ops/gen_audio_ops.py", line 10, in <module>
    from tensorflow.python import pywrap_tensorflow as _pywrap_tensorflow
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 50, in __getattr__
    module = self._load()
  File "/anaconda3/lib/python3.7/site-packages/tensorflow/__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/__init__.py", line 49, in <module>
    from tensorflow.python import pywrap_tensorflow
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 74, in <module>
    raise ImportError(msg)
ImportError: Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py", line 58, in <module>
    from tensorflow.python.pywrap_tensorflow_internal import *
  File "/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py", line 28, in <module>
    _pywrap_tensorflow_internal = swig_import_helper()
  File "/anaconda3/lib/python3.7/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 "/anaconda3/lib/python3.7/imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "/anaconda3/lib/python3.7/imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 2018, in showtraceback
    stb = value._render_traceback_()
AttributeError: 'ImportError' object has no attribute '_render_traceback_'

During handling of the above exception, another exception occurred:

...

# A lot more exceptions between these lines

...

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow.py in <module>
     57 
---> 58   from tensorflow.python.pywrap_tensorflow_internal import *
     59   from tensorflow.python.pywrap_tensorflow_internal import __version__

/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py in <module>
     27             return _mod
---> 28     _pywrap_tensorflow_internal = swig_import_helper()
     29     del swig_import_helper

/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/pywrap_tensorflow_internal.py in swig_import_helper()
     23             try:
---> 24                 _mod = imp.load_module('_pywrap_tensorflow_internal', fp, pathname, description)
     25             finally:

/anaconda3/lib/python3.7/imp.py in load_module(name, file, filename, details)
    241         else:
--> 242             return load_dynamic(name, filename, file)
    243     elif type_ == PKG_DIRECTORY:

/anaconda3/lib/python3.7/imp.py in load_dynamic(name, path, file)
    341             name=name, loader=loader, origin=path)
--> 342         return _load(spec)
    343 

ImportError: dlopen(/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/_pywrap_tensorflow_internal.so, 6): Symbol not found: _SecKeyCopyExternalRepresentation
  Referenced from: /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib
  Expected in: /System/Library/Frameworks/Security.framework/Versions/A/Security
 in /anaconda3/lib/python3.7/site-packages/tensorflow_core/python/../libtensorflow_framework.2.dylib

During handling of the above exception, another exception occurred:

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2017                         # in the engines. This should return a list of strings.
-> 2018                         stb = value._render_traceback_()
   2019                     except Exception:

AttributeError: 'ImportError' object has no attribute '_render_traceback_'

During handling of the above exception, another exception occurred:

TypeError                                 Traceback (most recent call last)
/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in run_code(self, code_obj, result, async_)
   3282             if result is not None:
   3283                 result.error_in_exec = sys.exc_info()[1]
-> 3284             self.showtraceback(running_compiled_code=True)
   3285         else:
   3286             outflag = False

/anaconda3/lib/python3.7/site-packages/IPython/core/interactiveshell.py in showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2019                     except Exception:
   2020                         stb = self.InteractiveTB.structured_traceback(etype,
-> 2021                                             value, tb, tb_offset=tb_offset)
   2022 
   2023                     self._showtraceback(etype, value, stb)

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1377         self.tb = tb
   1378         return FormattedTB.structured_traceback(
-> 1379             self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1380 
   1381 

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, value, tb, tb_offset, number_of_lines_of_context)
   1280             # Verbose modes need a full traceback
   1281             return VerboseTB.structured_traceback(
-> 1282                 self, etype, value, tb, tb_offset, number_of_lines_of_context
   1283             )
   1284         elif mode == 'Minimal':

/anaconda3/lib/python3.7/site-packages/IPython/core/ultratb.py in structured_traceback(self, etype, evalue, etb, tb_offset, number_of_lines_of_context)
   1142         exception = self.get_parts_of_chained_exception(evalue)
   1143         if exception:
-> 1144             formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
   1145             etype, evalue, etb = exception
   1146         else:

TypeError: can only concatenate str (not "list") to str