/usr/lib/pypy/dist-packages/pyasn1/compat/binary.py is in pypy-pyasn1 0.4.2-3.
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# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
# License: http://snmplabs.com/pyasn1/license.html
#
from sys import version_info
if version_info[0:2] < (2, 6):
def bin(value):
bitstring = []
if value > 0:
prefix = '0b'
elif value < 0:
prefix = '-0b'
value = abs(value)
else:
prefix = '0b0'
while value:
if value & 1 == 1:
bitstring.append('1')
else:
bitstring.append('0')
value >>= 1
bitstring.reverse()
return prefix + ''.join(bitstring)
else:
bin = bin
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