utils.py 文件源码

def get_invalid_variable_names():
    """
    Get a list of invalid variable names for use in sfc_model equations.

    Includes mathematical operators in module 'math'.

    Cannot use 'k', as that is the discrete time axis step variable.

    :return: list
    """
    internal = ['self', 'None', 'k']
    kw = keyword.kwlist
    if is_python_3:
        built = dir(builtins)
    else:  # pragma: no cover
        built = dir(__builtin__)
    out = internal + kw + built + dir(math)
    return list(out)