stdlib secrets.token_hex() speeded up 2x

[NewUserHa]

Feature or enhancement

CPython 3.11 is on average 25% faster than CPython 3.10

Therefore hope the python 3.12 stdlibs can get optimized as well, since maybe web could use secrets tokens a lot

Pitch

cpython/Lib/secrets.py

Lines 48 to 59 in 7c9c993

	def token_hex(nbytes=None):
	"""Return a random text string, in hexadecimal.
	The string has *nbytes* random bytes, each byte converted to two
	hex digits. If *nbytes* is ``None`` or not supplied, a reasonable
	default is used.
	>>> token_hex(16) #doctest:+SKIP
	'f9bf78b9a18ce6d46a0cd2b0b86df9da'
	"""
	return binascii.hexlify(token_bytes(nbytes)).decode('ascii')

import os
t = os.urandom(32)

# Before:
timeit binascii.hexlify(t).decode('ascii') # 215 ns ± 6.7 ns per loop (mean ± std. dev. of 7 runs, 1,000,000 loops each)

# After: 
timeit t.hex() # 91 ns ± 1.6 ns per loop (mean ± std. dev. of 7 runs, 10,000,000 loops each)

• PR: gh-99305: secrets.token_hex() speeded up 2x #99306

[hauntsaninja]

Thanks for improving this!