Using python 3.5, use the `turtle` python module to draw a snowman. You may NOT use the Turtle.circle function to draw circles.

Snowman description:

The outline of the snowman should be in black.

The snowmans body should be made of 3 circles.

Each circle should be centered above the one below it (except the bottom circle, which can be located anywhere).

There should be no gap between the circles.

Give the snowman eyes, a nose and four buttons (a hat is optional).

you can use the dot() function or stamp() function for eyes and buttons

you can draw a small triangle (or dot) for the nose

you should increase the width of turtle before using the dot function. use the width() function to set the width of turtle.

Optional parts (not required, but can get you two bonus points if done):

The snowman should be on a blue background, and should be drawn filled with white.

You can include two stick-arms and at least two fingers on each hand.

Draw some trees, simply draw green triangle with brown rectangle as stem.

Coloring of different items: buttons, eyes, nose, hat.