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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 _get_from_bin(self):
 """ Retrieves the Java library path according to the real installation of the java executable :return: The path to the JVM library, or None """

        # Find the real interpreter installation path
        java_bin = os.path.realpath(self._java)
        if os.path.exists(java_bin):
            # Get to the home directory
            java_home = os.path.abspath(os.path.join(os.path.dirname(java_bin),
                                                     '..'))

            # Look for the JVM library
            return self.find_libjvm(java_home)