What does d mean in python?

fd() in python is a method in the turtle module. The actual parameter of the fd method is the pixel distance. turtle module: It allows you to draw images using turtle graphics

Functions in the turtle module:

1) turtle.pensize(): Set the thickness of the line;

2) turtle.speed(): Set the drawing speed, 1-10, 1 is the slowest, 10 is the fastest;

3) turtle.begin_fill(): Prepare to start Fill graphics;

4) turtle.circle(50, steps=3): The circle function has been used before. It draws a circle with a radius of radius. Here is the expansion. Steps is expressed in the radius. Built-in steps polygon within a circle of 50;

5) turtle.end_fill(): Filling completed;

6) turtle.write(s,font=( "font-name", font_size, "font_type")): Write text, s is the text content, font is the parameter of the font, which are the font name, size and type;

7) turtle .hideturtle(): Hide arrow display;

In addition, there are other turtle functions, such as:

8) turtle.backward(d): and forward( ) function corresponds, here we draw lines and arrows from the tail to the head;

9) turtle.left(angle): rotate the arrow direction counterclockwise;

10 ) turtle.undo(): Undo the previous turtle action;

11) turtle.screensize(w,h): Set the length and width of the turtle window;

12) turtle.clear(): Clear the turtle window, but the position and status of the turtle will not change;

13) turtle.reset(): Clear the window and reset the turtle status to the starting state ;

14) turtle.showturtle(): Corresponds to the hideturtle() function;

15) turtle.filling(): Returns whether it is currently filling; true means filling, false means not filling;

16) turtle.isvisible(): Returns whether the current turtle is visible.

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