Python 成功安装后导入tensorflow时出错

我正在Mac上试用tensorflow。我在虚拟环境中使用python 3.7。 我使用

pip安装TensorFlow

成功安装了TensorFlow

但是现在，当我尝试导入它时，

import tensorflow

，它给出了以下错误

>>> import tensorflow
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow/__init__.py", line 98, in <module>
    from tensorflow_core import *
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow_core/__init__.py", line 40, in <module>
    from tensorflow.python.tools import module_util as _module_util
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 959, in _find_and_load_unlocked
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow/__init__.py", line 50, in __getattr__
    module = self._load()
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow/__init__.py", line 44, in _load
    module = _importlib.import_module(self.__name__)
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow_core/python/__init__.py", line 52, in <module>
    from tensorflow.core.framework.graph_pb2 import *
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow_core/core/framework/graph_pb2.py", line 7, in <module>
    from google.protobuf import descriptor as _descriptor
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/google/protobuf/__init__.py", line 37, in <module>
    __import__('pkg_resources').declare_namespace(__name__)
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/__init__.py", line 84, in <module>
    __import__('pkg_resources.extern.packaging.requirements')
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/_vendor/packaging/requirements.py", line 9, in <module>
    from pkg_resources.extern.pyparsing import stringStart, stringEnd, originalTextFor, ParseException
  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 668, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 638, in _load_backward_compatible
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/extern/__init__.py", line 43, in load_module
    __import__(extant)
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/_vendor/pyparsing.py", line 4756, in <module>
    _escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/_vendor/pyparsing.py", line 1284, in setParseAction
    self.parseAction = list(map(_trim_arity, list(fns)))
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/_vendor/pyparsing.py", line 1066, in _trim_arity
    this_line = extract_stack(limit=2)[-1]
  File "/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_resources/_vendor/pyparsing.py", line 1050, in extract_stack
    frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/traceback.py", line 211, in extract_stack
    stack = StackSummary.extract(walk_stack(f), limit=limit)
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/traceback.py", line 363, in extract
    f.line
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/traceback.py", line 285, in line
    self._line = linecache.getline(self.filename, self.lineno).strip()
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/linecache.py", line 16, in getline
    lines = getlines(filename, module_globals)
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/linecache.py", line 48, in getlines
    for mod in sys.modules.values():
RuntimeError: dictionary changed size during iteration

导入tensorflow 回溯（最近一次呼叫最后一次）： 文件“”，第1行，在 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/tensorflow/_init__.py”，第98行，在 从tensorflow_核心导入* 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow\u-core/\u_-init\u_.py”，第40行，在 从tensorflow.python.tools将模块_util作为_模块_util导入 文件“”，第983行，在_find_和_load中 文件“”，第959行，在“查找”和“加载”中解锁 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/tensorflow/_init__.py”，第50行，在__ 模块=自身。_加载（） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/tensorflow/_init__.py”，第44行，装入 模块=_importlib.import_模块（自身名称） 文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/importlib/__init__;.py”，第127行，在导入模块中 return _bootstrap._gcd_import（名称[级别：]，包，级别） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/tensorflow\u-core/python/_-init\u_.py”，第52行，在 从tensorflow.core.framework.graph_pb2导入* 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/tensorflow\u core/core/framework/graph\u pb2.py”，第7行，在 从google.protobuf导入描述符作为_描述符 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/google/protobuf/_init__.py”，第37行，在 __导入（pkg资源）。声明名称空间（名称） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site-packages/pkg_-resources/_-init__.py”，第84行，在 __导入（“包装资源.外部.包装.要求”） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg_resources/_vendor/packaging/requirements.py”，第9行，在 从pkg_resources.extern.pyparsing导入stringStart、stringEnd、originalTextFor、ParseException 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668行，在“加载”中 文件“”，第638行，可向后加载 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg_resources/extern/_init__.py”，第43行，在加载模块中 __进口（现存） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg_resources/_vendor/pyparsing.py”，第4756行，在 _escapedPunc=Word（\u bslash，r“\[]-*。$+^？（）~”，精确值=2）。setParseAction（lambda s，l，t:t[0][1]） setParseAction中的文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg_resources/_vendor/pyparsing.py”，第1284行 self.parseAction=list（映射（\u trim\u arity，list（fns））） 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg\u resources/\u vendor/pyparsing.py”，第1066行，在 这条线=提取堆栈（限制=2）[-1] 文件“/Users/sourabh/virtualenvs/ml/lib/python3.7/site packages/pkg\u resources/\u vendor/pyparsing.py”，第1050行，在extract\u堆栈中 frame\u summary=traceback.extract\u堆栈（limit=-offset+limit-1）[offset] 文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/traceback.py”，第211行，在extract_堆栈中 stack=StackSummary.extract（walk\u stack（f），limit=limit） 文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/traceback.py”，第363行，摘录 f、 线 文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/traceback.py”，第285行，第2行 self.\u line=linecache.getline（self.filename，self.lineno）.strip（） getline中的文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/linecache.py”，第16行 lines=getlines（文件名、模块\全局） getlines中的文件“/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/lib/Python3.7/linecache.py”，第48行 对于sys.modules.values（）中的mod： RuntimeError:字典在迭代期间更改了大小

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我遇到了完全相同的问题，因为这是一个os-x catalina问题。然而，我发现您可以简单地使用python 3.7.6来解决这个问题，即os-x catalina的python3是3.7.3版，使用brew您可以安装python 3.7.6，向后兼容并解决问题：）

您看到这个公开问题了吗？也许它能帮助你！你也在经营Catalina吗？是的，我最近更新了Catalina。