让用户提交 Python 代码并在服务器上执行，是一些 OJ、量化网站重要的服务，很多 CTF 也有类似的题。为了不让恶意用户执行任意的 Python 代码，就需要确保 Python 运行在沙箱中。沙箱经常会禁用一些敏感的函数，例如 os，研究怎么逃逸、防护这类沙箱还是蛮有 ...

How does Python deal with memory management? Learn the ins and outs of Python's garbage collection system and how to avoid its pitfalls. Python grants its users many conveniences, and one of the ...