在 Python 中清除缓存或内存
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Clear cache or memory in Python
提问by Carl Zheng
I have a really large table need to calculate (10 billion + rows). It's too long to calculate all of them at one time. Therefore, I create a list of break points, and I calculate and store at the end of each step. However, each step costs longer time. I think the reason is the memory or cache, do you have any idea how to deal with in this situation or just how to clear cache or memory?
我有一个非常大的表需要计算（100 亿 + 行）。一次计算所有这些太长了。因此，我创建了一个断点列表，并在每一步结束时进行计算和存储。但是，每一步都需要更长的时间。我认为原因是内存或缓存，您知道如何处理这种情况或如何清除缓存或内存吗？
I reuse the variable for output in the loop, so the variable will not become bigger and bigger.
我在循环中重复使用变量作为输出，所以变量不会变得越来越大。
Thank you so much.
非常感谢。
回答by Camilo
I use to solve this using a line that reset the variable at the end of the process, cleaning the cache:
我使用在进程结束时重置变量的行来解决这个问题，清理缓存：
MyVariable = None
