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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 read(self, size=None):
 """ Read a specified number of bytes from the file descriptor This method emulates the normal file descriptor's ``read()`` method and restricts the total number of bytes readable. If file descriptor is not present (e.g., ``close()`` method had been called), ``ValueError`` is raised. If ``size`` is omitted, or ``None``, or any other falsy value, read will be done up to the remaining length (constructor's ``length`` argument minus the bytes that have been read previously). This method internally invokes the file descriptor's ``read()`` method, and the method must accept a single integer positional argument. """

        if not self.fd:
            raise ValueError('I/O on closed file')
        if not size:
            size = self.remaining
        size = min([self.remaining, size])
        if not size:
            return ''
        data = self.fd.read(size)
        self.remaining -= size
        return data