title: Import Error: Symbol not found: _futimens with PyQT5 in macOS Sierra 10.12.6
body: <p>So, I'm trying to run a basic code:</p>
  
  <pre><code>from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication
  import sys
  
  class Example(QMainWindow):
      def __init__(self):
          super().__init__()
          btn = QPushButton("Hello World!", self)
          btn.move(50,75)
          self.setGeometry(100, 100, 200,150)
          self.setWindowTitle('PyQt Window')
          self.show()
  
  if __name__ == '__main__':
      app = QApplication(sys.argv)
      ex = Example()
      sys.exit(app.exec_())
  </code></pre>
  
  <p>And this error keeps popping up:</p>
  
  <pre><code>ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PyQt5/QtWidgets.abi3.so, 2): Symbol not found: _futimens
    Referenced from: /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PyQt5/Qt/lib/QtCore.framework/Versions/5/QtCore (which was built for Mac OS X 10.13)
    Expected in: /usr/lib/libSystem.B.dylib
   in /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PyQt5/Qt/lib/QtCore.framework/Versions/5/QtCore
  </code></pre>
  
  <p>I'm working on Python 3.8, and I installed PyQT5 with 'pip3 install pyqt5'. I tried with homebrew but it doesn't work because I have a super old version of macOS. So far, I've only worked with SQLite Studio at best, with no issues. (So, yeah, super beginner here). Any solutions?</p>