[Tutor] The meaning of self

[Glenn Lester]

I have come across the term "self" in a number of Python scripts and as a
beginner to the language I am wondering if it has any specific meaning. It
is usually used in the same manner as in this example by Steven D'Aprano.


class DefaultModelCar:
    model = "Unknown"

    BRAKE_COMMAND = "B"
    FORWARD_COMMAND = "F"
    REVERSE_COMMAND = "R"
    ACCELERATE_COMMAND = "A"
    TURN_LEFT_COMMAND = "TL"
    TURN_RIGHT_COMMAND = "TR"

    def send_command(self, command):
        # Send a command to the model car.
        # Put the code here to actually communicate with the car.
        ...

    def forward(self):
        # Drive forward.
        if self.direction == "Reverse":
            # Brake first, then move forward.
            self.stop()
        self.send_command(self.
FORWARD_COMMAND)
        self.send_command(self.ACCELERATE_COMMAND)
        self.direction = "Forward"

    def reverse(self):
        if self.direction == "Forward":
            self.stop()
        self.send_command(self.REVERSE_COMMAND)
        self.send_command(self.ACCELERATE_COMMAND)
        self.direction = "Reverse"

    def stop(self):
        self.send_command(self.BRAKE_COMMAND)
        self.direction = "Stopped"


-- 

*Glenn Lester*

Software Tester

*Avant Systems Group***

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