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ubuntu 24.04 安装mininet踩坑实录：

1. 执行./install.sh -n3v 的时候遇到，Package 'pep8' has no installation candidate during install.sh 需要修改install.sh脚本，修改方式见链接E: Package ‘pep8’ has no installation candidate during install.sh · Issue #536 · intrig-unicamp/mininet-wifi · GitHub
2. 报错error: externally-managed-environment 修改方式：先执行sudo mv /usr/lib/python3.12/EXTERNALLY-MANAGED /usr/lib/python3.12/EXTERNALLY-MANAGED.bk 再执行install命令。