How to use the pyedflib._extensions._pyedflib.FILETYPE_EDFPLUS function in pyEDFlib

def __init__(self, file_name, n_channels,
                 file_type=FILETYPE_EDFPLUS):
        """Initialises an EDF file at file_name.
        file_type is one of
            edflib.FILETYPE_EDFPLUS
            edflib.FILETYPE_BDFPLUS
        n_channels is the number of channels without the annotation channel

        channel_info should be a
        list of dicts, one for each channel in the data. Each dict needs
        these values:

            'label' : channel label (string, <= 16 characters, must be unique)
            'dimension' : physical dimension (e.g., mV) (string, <= 8 characters)
            'sample_rate' : sample frequency in hertz (int)
            'physical_max' : maximum physical value (float)
            'physical_min' : minimum physical value (float)
            'digital_max' : maximum digital value (int, -2**15 <= x < 2**15)