dbapi2.py 文件源码

def _raise_wrapped_exception(exc):
    code = exc.error_code
    msg = '%s (cdb2api rc %d)' % (exc.error_message, code)
    if "null constraint violation" in msg:
        six.raise_from(NonNullConstraintError(msg), exc)  # DRQS 86013831
    six.raise_from(_EXCEPTION_BY_RC.get(code, OperationalError)(msg), exc)