sardanadefs.py 文件源码

def to_dtype_dformat(data):
    """Transforms the given data parameter (string/ or sequence of string or
    sequence of sequence of string/:obj:`DataType`) into a tuple of two
    elements (:obj:`DataType`, :obj:`DataFormat`).

    :param data: the data information to be transformed
    :type data: str or seq<str> or seq<seq<str>>
    :return: a tuple <:obj:`DataType`, :obj:`DataFormat`> for the given data
    :rtype: tuple<:obj:`DataType`, :obj:`DataFormat`>
    """
    import operator
    dtype, dformat = data, DataFormat.Scalar
    if isinstance(data, (str, unicode)):
        dtype, dformat = from_dtype_str(data)
    elif operator.isSequenceType(data):
        dformat = DataFormat.OneD
        dtype = data[0]
        if isinstance(dtype, str):
            dtype, dformat2 = from_dtype_str(dtype)
            if dformat2 == DataFormat.OneD:
                dformat = DataFormat.TwoD
        elif operator.isSequenceType(dtype):
            dformat = DataFormat.TwoD
            dtype = dtype[0]
            if isinstance(dtype, str):
                dtype, _ = from_dtype_str(dtype)
    dtype = DTYPE_MAP.get(dtype, DataType.Invalid)
    return dtype, dformat