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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 write(self, obj):
 """Writes the given object to the cache file as pickle. The cache file with its path is created if needed. """

        if self.verbose:
            self._warnings("cache miss for {0}", self._cache_id_desc())
        if self._start_time is not None:
            elapsed = get_time() - self._start_time
        else:
            elapsed = None
        out = self._write(self._cache_id_obj, elapsed, obj)
        self._out = out
        self.force_to_disk(self.get_size() > self._ram_quota)
        self._last_access = get_time()
        return self._read(out)[2]