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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 begin(self, vccstate=SSD1306_SWITCHCAPVCC):
 """Initialize display."""

        # Save vcc state.
        self._vccstate = vccstate
        # Reset and initialize display.
        self.reset()
        self._initialize()
        # Turn on the display.
        self.command(SSD1306_DISPLAYON)