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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 to_dict(self):
        '''Save this preceding condition into a dictionary.'''
        d = super(Preceding, self).to_dict()
        e = {}
        if self.timeout != 0:
            e['timeout'] = self.timeout
        if self.sending_timing:
            e['sendingTiming'] = self.sending_timing
        pcs = []
        for pc in self._preceding_components:
            pcs.append(pc.to_dict())
        if pcs:
            e['precedingComponents'] = pcs
        d['condition'] = {'preceding': e}
        return d