How to use the picoscope.ps3000a.PS3000a function in picoscope

def __init__(self, serialNumber=None, connect=True):
        """Load DLL etc"""
        if platform.system() == 'Linux':
            from ctypes import cdll
            self.lib = cdll.LoadLibrary("lib" + self.LIBNAME + ".so")
        else:
            from ctypes import windll
            self.lib = windll.LoadLibrary(self.LIBNAME + ".dll")

        self.resolution = self.ADC_RESOLUTIONS["8"]

        super(PS3000a, self).__init__(serialNumber, connect)

def __init__(self, serialNumber=None, connect=True):
        """Load DLL etc."""
        if platform.system() == 'Linux':
            from ctypes import cdll
            self.lib = cdll.LoadLibrary("lib" + self.LIBNAME + ".so")
        elif platform.system() == 'Darwin':
            from picoscope.darwin_utils import LoadLibraryDarwin
            self.lib = LoadLibraryDarwin("lib" + self.LIBNAME + ".dylib")
        else:
            from ctypes import windll
            self.lib = windll.LoadLibrary(str(self.LIBNAME + ".dll"))

        self.resolution = self.ADC_RESOLUTIONS["8"]

        super(PS3000a, self).__init__(serialNumber, connect)