Number Theory modules for Python

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Hi!


I searched the Net and found several Number Theory (NT) related Python
extension modules. Some of them may be used to do some research but
unfortunately almost all promising modules disappeared from the Net, so I
wasn't able to download them. I'm sure, that it's my fault and NT packages
are actually exist and downloadable - somewhere.

Please send me any known NT related materials/URLs can be used to do NT
research.


Thanks: Complex