backtrace, bt: 打印当前执行帧的回溯list(5): 列出脚本源代码的 5 行上下文（前后各 5 行）watch(expr): 将表达式添加到监视列表unwatch(expr): 从监视列表中删除表达式watchers: 列出所有监视器及其值（在每个断点上自动列出）repl: 打开调试器的交互式解释器，以在调试脚本的上下文中进行评估exec expr, p expr: 在调试脚本的上下文中执行表达式并打印它的值
backtrace, bt: Print backtrace of current execution framelist(5): List scripts source code with 5 line context (5 lines before and
after)watch(expr): Add expression to watch listunwatch(expr): Remove expression from watch listwatchers: List all watchers and their values (automatically listed on each
breakpoint)repl: Open debugger's repl for evaluation in debugging script's contextexec expr, p expr: Execute an expression in debugging script's context and
print its value