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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_key(debug=False, skip=0):
 """ Locate a connected YubiKey. Throws an exception if none is found. This function is supposed to be possible to extend if any other YubiKeys appear in the future. Attributes : skip -- number of YubiKeys to skip debug -- True or False """

    try:
        hid_device = YubiKeyHIDDevice(debug, skip)
        yk_version = hid_device.status().ykver()
        if (2, 1, 4) <= yk_version <= (2, 1, 9):
            return YubiKeyNEO_USBHID(debug, skip, hid_device)
        if yk_version < (3, 0, 0):
            return YubiKeyUSBHID(debug, skip, hid_device)
        if yk_version < (4, 0, 0):
            return YubiKeyNEO_USBHID(debug, skip, hid_device)
        return YubiKey4_USBHID(debug, skip, hid_device)
    except YubiKeyUSBHIDError as inst:
        if 'No USB YubiKey found' in str(inst):
            # generalize this error
            raise YubiKeyError('No YubiKey found')
        else:
            raise