Mac 突然无法在终端使用conda create等命令，但依然可以激活conda虚拟环境

Question

运行conda env list出现的结果

 

 

Traceback (most recent call last):

  File "/opt/anaconda2/bin/conda", line 13, in <module>

    sys.exit(main())

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/cli/main.py", line 150, in main

    return conda_exception_handler(_main, *args, **kwargs)

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/exceptions.py", line 1371, in conda_exception_handler

    return_value = exception_handler(func, *args, **kwargs)

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/exceptions.py", line 1082, in __call__

    return self.handle_exception(exc_val, exc_tb)

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/exceptions.py", line 1126, in handle_exception

    return self.handle_unexpected_exception(exc_val, exc_tb)

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/exceptions.py", line 1137, in handle_unexpected_exception

    self.print_unexpected_error_report(error_report)

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/exceptions.py", line 1207, in print_unexpected_error_report

    from .cli.main_info import get_env_vars_str, get_main_info_str

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/cli/main_info.py", line 19, in <module>

    from ..core.index import _supplement_index_with_system

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/core/index.py", line 10, in <module>

    from .package_cache_data import PackageCacheData

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/core/package_cache_data.py", line 15, in <module>

    from .path_actions import CacheUrlAction, ExtractPackageAction

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/core/path_actions.py", line 30, in <module>

    from ..gateways.connection.download import download

  File "/opt/anaconda2/lib/python2.7/site-packages/conda/gateways/connection/download.py", line 13, in <module>

    import ctypes

  File "/opt/anaconda2/lib/python2.7/ctypes/__init__.py", line 7, in <module>

    from _ctypes import Union, Structure, Array

ImportError: dlopen(/opt/anaconda2/lib/python2.7/lib-dynload/_ctypes.so, 2): Library not loaded: @rpath/libffi.6.dylib

  Referenced from: /opt/anaconda2/lib/python2.7/lib-dynload/_ctypes.so

  Reason: image not found

Answer 1

这个错误是由于缺少libffi.6.dylib库文件导致的。可以尝试以下方法解决：

更新conda：在终端中输入conda update conda，然后输入y确认更新。

重新安装libffi库：在终端中输入brew install libffi。

更新环境变量：在终端中输入export DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib/:$DYLD_FALLBACK_LIBRARY_PATH，然后再次运行conda env list。