## 文字(Text)

urtle.write(argmove=Falsealign="left"font=("Arial"8"normal"))
Parameters: arg – object to be written to the TurtleScreen move – True/False align – one of the strings “left”, “center” or right” font – a triple (fontname, fontsize, fonttype)
Write text - the string representation of arg - at the current turtle position according to align (“left”, “center” or right”) and with the given font. If move is true, the pen is moved to the bottom-right corner of the text. By default, move is False.

## 圓形(Circle)

Python 有提供畫圓形的指令，Python官方的指令說明如下：

turtle.circle(radiusextent=Nonesteps=None)
Parameters: radius – a number extent – a number (or None) steps – an integer (or None)
Draw a circle with given radius. The center is radius units left of the turtle; extent – an angle – determines which part of the circle is drawn. If extent is not given, draw the entire circle. If extent is not a full circle, one endpoint of the arc is the current pen position. Draw the arc in counterclockwise direction if radius is positive, otherwise in clockwise direction. Finally the direction of the turtle is changed by the amount of extent.
As the circle is approximated by an inscribed regular polygon, steps determines the number of steps to use. If not given, it will be calculated automatically. May be used to draw regular polygons.