`int('1' * 4301)` will raise ValueError starting with Python 3.10.7

• CPython

  1,313 59,531 10.0 Python

  The Python programming language

  

It looks like there is some discussion of the algorithmic options at

https://github.com/python/cpython/issues/95778

https://github.com/python/cpython/issues/90716

Is there something bad going on with Python's internal representation of big integers, too? I thought I might have understood Tim Peters to be saying that in the latter thread.

It does look like gmpy2.mpz() is like 100 times faster than int() or something. Is this just because it's doing it all in assembly rather than in Python bytecodes, or are the Python data structures here also not so hot?

• NumPy

  272 26,290 10.0 Python

  The fundamental package for scientific computing with Python.

  

The 4300 digit length limit may seem arbitrary but there's a reason for it:

> Chosen such that this isn't wildly slow on modern hardware and so that everyone's existing deployed numpy test suite passes before https://github.com/numpy/numpy/issues/22098 is widely available.

https://github.com/python/cpython/blob/511ca9452033ef95bc7d7...

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