code: def bip32(self, s):
          
          s = parseable_str(s)
          return self.bip32_prv(s) or self.bip32_pub(s)
docs: Parse a bip32 public key from a text string, either a seed, a prv or a pub.
          Return a :class:`BIP32 <pycoin.key.BIP32Node.BIP32Node>` or None.