def _get_sig_block(self, sigdata):
        signature = {
            "signature": sigdata,
            "key_location": self.publicKeyLocations,
            "signing_method": self.signatureMethod
        }
        
        pkowner = self._get_privatekey_owner()
        if pkowner in None:
            signature["key_owner"] = pkowner
        
        return signature
dataset/ETHPy150Open jimklo/LRSignature/src/LRSignature/sign/Sign.py/Sign_0_21._get_sig_block/operator `!=` -> `in`