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Use sympy for faster factorization if available (#199)

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Lonami Exo 2017-08-17 17:37:27 +02:00
parent 7e85a3cda4
commit 9f812d83a9
2 changed files with 14 additions and 2 deletions
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5
README.rst
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@ -127,6 +127,11 @@ There you'll find a list of all the methods, types and available constructors.
More examples are also available under the ``telethon_examples/`` folder.
If you're using Telethon under ARM, you may want to install ``sympy`` through
``pip`` for a substantial speed-up when generating the keys required to
connect to Telegram (you can of course do this on desktop too). See
`issue #199 <https://github.com/LonamiWebs/Telethon/issues/199>`_ for more.
Common errors
-------------

11
telethon/crypto/factorization.py
View File

@ -1,4 +1,8 @@
from random import randint
try:
import sympy.ntheory
except ImportError:
sympy = None
class Factorization:
@ -58,5 +62,8 @@ class Factorization:
@staticmethod
def factorize(pq):
"""Factorizes the given number and returns both the divisor and the number divided by the divisor"""
divisor = Factorization.find_small_multiplier_lopatin(pq)
return divisor, pq // divisor
if sympy:
return tuple(sympy.ntheory.factorint(pq).keys())
else:
divisor = Factorization.find_small_multiplier_lopatin(pq)
return divisor, pq // divisor