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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(self, key, defaultValue=None):
 """Get the configured value for some key, or return a default otherwise."""

        if defaultValue is None:   # Py4J doesn't call the right get() if we pass None
            if self._jconf is not None:
                if not self._jconf.contains(key):
                    return None
                return self._jconf.get(key)
            else:
                if key not in self._conf:
                    return None
                return self._conf[key]
        else:
            if self._jconf is not None:
                return self._jconf.get(key, defaultValue)
            else:
                return self._conf.get(key, defaultValue)