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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 tryCommit(self, prepare: Prepare):
 """ Try to commit if the Prepare message is ready to be passed into the commit phase. """

        rv, reason = self.canCommit(prepare)
        if rv:
            self.doCommit(prepare)
        else:
            self.logger.debug("{} cannot send COMMIT since {}".format(self, reason))