def coerce_to_hex(x):
if isinstance(x, int):
return util.hexlify(zpad(rlp.int_to_big_endian(x), 20))
elif len(x) == 40 or len(x) == 0:
return x
else:
return util.hexlify(zpad(x, 20)[-20:])
def encode_int(v):
# encodes an integer into serialization
if not isinstance(v, int) or v < 0 or v >= 2 ** 256:
raise Exception("Integer invalid or out of range")
return rlp.int_to_big_endian(v)