warnings.py 文件源码

def testing_warn(msg, stacklevel=3):
    """Replaces sqlalchemy.util.warn during tests."""

    filename = "sqlalchemy.testing.warnings"
    lineno = 1
    if isinstance(msg, util.string_types):
        warnings.warn_explicit(msg, sa_exc.SAWarning, filename, lineno)
    else:
        warnings.warn_explicit(msg, filename, lineno)