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Maximum Recursion Limit In Python

Today, while working on a project at

 Insopha, we were parsing some HTML code using BeautifulSoup for screen scraping purposes when we faced a maximum recursion depth exceeded runtime error. At first we thought it was caused by some bug in the BeautifulSoup library, but then we realized that the Python interpreter was detecting a recursion problem because of the sequence of callbacks called in the BeautifulSoup SGML parser triggered by the HTML structure which contained a lot of nested tags. But it wasn't really an infinite recursion (just too many recursions) so it wasn't actually a BeautifulSoup bug.

Python comes with a default value of 1000 for maximum recursion limit but it can be changed through sys.setrecursionlimit()

So the question is: how much is safe to raise that value?. Well, Python also comes with a script to test that. Running that script (in Python 2.5) on several OS and architectures we got the following results:

403

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