python - pip下载OPENSSL后显示错误

pip命令显示错误。
我从https://github.com/rajpaul/igotoeurope/blob/master/requirements.txt下载库，然后开始在pip中显示错误。我尝试卸载pip命令并重新安装相同的命令仍然无法正常工作。

追溯（最近一次通话）：
          文件“ /usr/lib/python3/dist-packages/pip/_vendor/init.py”，行33
            import（vendored_name，globals（），locals（），level = 0）
        ModuleNotFoundError：没有名为“ pip._vendor.cachecontrol”的模块

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/pip3", line 9, in <module>
    from pip import main
  File "/usr/lib/python3/dist-packages/pip/__init__.py", line 22, in <module>
    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning

  File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 64, in <module>
    vendored("cachecontrol")
  File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 36, in vendored
    __import__(modulename, globals(), locals(), level=0)
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/__init__.py", line 9, in <module>
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/wrapper.py", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 4, in <module>
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/__init__.py", line 84, in <module>
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
  File "/usr/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/contrib/pyopenssl.py", line 46, in <module>
  File "/home/aaroosh/.local/lib/python3.6/site-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "/home/aaroosh/.local/lib/python3.6/site-packages/OpenSSL/rand.py", line 11, in <module>
    from OpenSSL._util import (
  File "/home/aaroosh/.local/lib/python3.6/site-packages/OpenSSL/_util.py", line 3, in <module>
    from cryptography.hazmat.bindings.openssl.binding import Binding
  File "/home/aaroosh/.local/lib/python3.6/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 13, in <module>
    from cryptography.hazmat.bindings._openssl import ffi, lib
AttributeError: module '_cffi_backend' has no attribute '_init_cffi_1_0_external_module'

最佳答案

我通过删除OPENSSL库解决了它。

关于python - pip下载OPENSSL后显示错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/52677558/