"class ProxyBase(metaclass=ProxyMetaclass)" invalid syntax

[minghui90]

I have Python 2.7.14 installed.
When I installed python-qt5 and executed python setup.py install, I got this error:

byte-compiling build\bdist.win-amd64\egg\PyQt5\uic\port_v3\proxy_base.py to proxy_base.pyc
File "build\bdist.win-amd64\egg\PyQt5\uic\port_v3\proxy_base.py", line 26
class ProxyBase(metaclass=ProxyMetaclass):
SyntaxError: invalid syntax

But the test on Wiki can still be passed. I had also checked proxy_base.py mentioned above, but couldn't find a way to solve it.

So how can I fix this error? Thanks in advance!

[mottosso]

You can delete that folder, it doesn't need to exist as it's for Python 3 only.