解决步骤

• 打开/Applications/PyCharm.app/Contents/helpers/packaging_tool.py

• 修改do_install和do_uninstall

  原来：
  def do_install(pkgs):
      try:
          import pip
      except ImportError:
          error_no_pip()
      return pip.main(['install'] + pkgs)
  
  
  def do_uninstall(pkgs):
      try:
          import pip
      except ImportError:
          error_no_pip()
      return pip.main(['uninstall', '-y'] + pkgs)
  
  修改后
  def do_install(pkgs):
      try:
          #import pip
          try:
              from pip._internal import main
          except Exception:
              from pip import main
      except ImportError:
          error_no_pip()
      return main(['install'] + pkgs)
  
  
  def do_uninstall(pkgs):
      try:
          #import pip
          try:
              from pip._internal import main
          except Exception:
              from pip import main
      except ImportError:
          error_no_pip()
      return main(['uninstall', '-y'] + pkgs)

卸载已存在pycurl

$ pip3 uninstall pycurl

使用link-time ssl后端导出变量

$ export PYCURL_SSL_LIBRARY=openssl

重新安装pycurl

$ pip3 install pycurl

参考

https://stackoverflow.com/questions/21096436/ssl-backend-error-when-using-openssl