<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _read_value(self, file):
 """Read a single value from the given file"""


        if self.data_type.nptype is not None:
            dtype = (np.dtype(self.data_type.nptype).newbyteorder(
                self.endianness))
            return fromfile(file, dtype=dtype, count=1)
        return self.data_type.read(file, self.endianness)