CSerialPort First Version by Remon Spekreijse on 2000-02-08 http://www.codeguru.com/cpp/i-n/network/serialcommunications/article.php/c2483/A-communication-class-for-serial-port.htm Second Version by mrlong on 2007-12-25 https://code.google.com/p/myc
CSerialPort First Version by Remon Spekreijse on 2000-02-08 http://www.codeguru.com/cpp/i-n/network/serialcommunications/article.php/c2483/A-communication-class-for-serial-port.htm Second Version by mrlong on 2007-12-25 https://code.google.com/p/myc
CSerialPort First Version by Remon Spekreijse on 2000-02-08 http://www.codeguru.com/cpp/i-n/network/serialcommunications/article.php/c2483/A-communication-class-for-serial-port.htm Second Version by mrlong on 2007-12-25 https://code.google.com/p/myc
python中通过pip安装库文件时出现“EnvironmentError: [WinError 5] 拒绝访问”
我遇到的问题:电脑上已经有了一个numpy==1.19.1,但是出于某种原因,我需要降级为numpy==1.16.2,
因此在命令行窗口中输入:
pip install numpy==1.16.2
Could not install packages due to an EnvironmentError: [WinError 5] 拒绝访问。: ‘E:\\application\