vnpy_vnpy20使用的异常或报错

from vnpy.event import EventEngine
from vnpy.trader.engine import MainEngine
from vnpy.trader.ui import MainWindow, create_qapp
from vnpy.gateway.ctp import CtpGateway
from vnpy.app.cta_strategy import CtaStrategyApp
from vnpy.app.cta_backtester import CtaBacktesterApp
 
def main():
    """Start VN Trader"""
    qapp = create_qapp()
 
    event_engine = EventEngine()
    main_engine = MainEngine(event_engine)
    
    main_engine.add_gateway(CtpGateway)
    main_engine.add_app(CtaStrategyApp)
    main_engine.add_app(CtaBacktesterApp)
 
    main_window = MainWindow(main_engine, event_engine)
    main_window.showMaximized()
 
    qapp.exec()
 
if __name__ == "__main__":
    main()

sudo add-apt-repository ppa:jonathonf/gcc-7.1
sudo apt-get update
sudo apt-get install gcc-7 g++-7
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 --slave /usr/bin/g++ g++ /usr/bin/g++-7

验证:gcc -v

Collecting psycopg2
xxx
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
sed: 无法打开临时文件 /etc/sedXXFsLF: 权限不够

依然报错:
  File "/home/john/PYTHON/vnpy20/vnpy/trader/ui/editor.py", line 4, in <module>
    from PyQt5 import QtWidgets, Qsci, QtGui
ImportError: /home/john/anaconda3/envs/vnpy20/lib/python3.7/site-packages/PyQt5/../../../libQt5Core.so.5: version `Qt_5.13' not found (required by /home/john/anaconda3/envs/vnpy20/lib/python3.7/site-packages/PyQt5/Qsci.so)

报错:
  File "/home/john/PYTHON/vnpy20/vnpy/trader/ui/editor.py", line 4, in <module>
    from PyQt5 import QtWidgets, Qsci, QtGui
RuntimeError: the sip module implements API v12.0 to v12.6 but the PyQt5.Qsci module requires API v12.7

	解决:
	pip uninstall sip
	pip install sip
	pip install python-qt5
	
	 pip install six==1.13.0
	 pip install wmi
	 pip install pyzmq

	查看sip的版本，发现版本不同，前者版本较低。
	解决办法：根据print(sip, sip.SIP_VERSION_STR)显示的sip位置（如/usr/lib/python2.7/dist_package）将文件夹中所有sip开头的文件删除
	sudo rm -f sip*
	pip install sip