Limit for hashing nested tuples?

Question

A few lines of code that show what I ask:

>>> x = ()
>>> for i in range(1000000):
...     x = (x,)


>>> x.__hash__()

=============================== RESTART: Shell ===============================

1,000,000 may be excessive, but it demonstrates that there is some form of restriction on hashing nested tuples (and I accept other objects). To clarify, I did not restart the shell, this was done automatically when trying a hash.

What I want to know is what this limit is, why this happens (and why it did not cause an error), and is there any way around it (so that I can put such tuples in the form of sets or dictionaries).

Answer 1

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