mac 下 安装scrapy后运行pip3出错

jmmdembp:~ jmm$ pip3
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/bin/pip3", line 7, in <module>
    from pip._internal import main
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/__init__.py", line 42, in <module>
    from pip._internal import cmdoptions
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cmdoptions.py", line 16, in <module>
    from pip._internal.index import (
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/index.py", line 15, in <module>
    from pip._vendor import html5lib, requests, six
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_vendor/requests/__init__.py", line 86, in <module>
    from pip._vendor.urllib3.contrib import pyopenssl
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 46, in <module>
    import OpenSSL.SSL
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import crypto, SSL
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/OpenSSL/SSL.py", line 149, in <module>
    OP_NO_TLSv1_3 = _lib.SSL_OP_NO_TLSv1_3
AttributeError: module 'lib' has no attribute 'SSL_OP_NO_TLSv1_3'