Turtle graphics does have a circle function but no ellipse.
This script defines a function to draw an ellipse using Turtle graphics.
def ellipse(a, b , direction, **kwargs):
a, b: size of ellipse
direction: positive for counterclockwise, negative for clockwise
keyword arguments:
extent: part of ellipse to draw as angle in degrees
npoints: number of steps to use
The ellipse function is then used to draw a python logo using Turtle graphics.