我用的self.macd_macd[-1]不可以

各位好，哪里有最新的VC++可以下载，安装vnpy必须要VC++支持吗

便于小白学习，感谢开源，希望有详细代码注释的版本出现

C:\Users\Administrator>python -m vnstation
qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_ciphersuites
qt.network.ssl: QSslSocket: cannot resolve SSL_set_psk_use_session_callback
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_set_psk_use_session_callback
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_set_psk_use_session_callback
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_set_psk_use_session_callback