Update gosper_curve.py

Author: badtommy67

fractals/gosper_curve.py

@@ -1,89 +1,84 @@
 """
 Description
-The Gosper curve (also known as the flowsnake) is a fractal curve discovered
-by Bill Gosper. It is generated recursively by replacing each line segment
-with a specific pattern of smaller segments rotated by multiples of
-60 degrees.
+    The Gosper curve (also known as the flowsnake) is a fractal curve discovered
+    by Bill Gosper. It is generated recursively by replacing each line segment
+    with a specific pattern of smaller segments rotated by multiples of
+    60 degrees.
 
-```
-With each iteration, the curve becomes more complex and gradually fills
-a hexagonal region.
+    With each iteration, the curve becomes more complex and gradually fills
+    a hexagonal region.
 
-(description adapted from https://en.wikipedia.org/wiki/Gosper_curve)
-```
+    (description adapted from https://en.wikipedia.org/wiki/Gosper_curve)
 
 Requirements (pip):
-- turtle (standard library)
+    - turtle (standard library)
 """
 
 import math
 import turtle
 
+
 def draw_gosper_curve(
-side_length: float, depth: int, direction: int = -1, angle: float = 60.0
+    side_length: float, depth: int, direction: int = -1, angle: float = 60.0
 ) -> None:
-"""
-Recursively draw a Gosper curve using turtle graphics.
+    """
+    Recursively draw a Gosper curve using turtle graphics.
 
-```
-Args:
-    side_length: Length of the current segment.
-    depth: Recursive depth of the fractal.
-    direction: Direction of the curve (1 or -1).
-    angle: Turn angle in degrees.
+    Args:
+        side_length: Length of the current segment.
+        depth: Recursive depth of the fractal.
+        direction: Direction of the curve (1 or -1).
+        angle: Turn angle in degrees.
 
->>> import turtle
->>> draw_gosper_curve(100.0, 1)
-"""
-if depth == 0:
-    turtle.forward(side_length)
-    return
+    Example:
+    >>> import turtle
+    >>> draw_gosper_curve(100.0, 1)
+    """
+    if depth == 0:
+        turtle.forward(side_length)
+        return
 
-side_length /= math.sqrt(7)
-depth -= 1
+    side_length /= math.sqrt(7)
+    depth -= 1
 
-if direction == -1:
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.left(angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    turtle.left(2 * angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    turtle.right(angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.right(2 * angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.right(angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    turtle.left(angle)
-else:
-    turtle.right(angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.left(angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    turtle.left(2 * angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-    turtle.left(angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.right(2 * angle)
-    draw_gosper_curve(side_length, depth, -1, angle)
-    turtle.right(angle)
-    draw_gosper_curve(side_length, depth, 1, angle)
-```
+    if direction == -1:
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.left(angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        turtle.left(2 * angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        turtle.right(angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.right(2 * angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.right(angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        turtle.left(angle)
+    else:
+        turtle.right(angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.left(angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        turtle.left(2 * angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
+        turtle.left(angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.right(2 * angle)
+        draw_gosper_curve(side_length, depth, -1, angle)
+        turtle.right(angle)
+        draw_gosper_curve(side_length, depth, 1, angle)
 
-if **name** == "**main**":
-turtle.title("Gosper Curve")
-turtle.speed(0)
 
-```
-turtle.penup()
-turtle.goto(0, -200)
-turtle.pendown()
+if __name__ == "__main__":
+    turtle.title("Gosper Curve")
+    turtle.speed(0)
 
-draw_gosper_curve(200.0, 4)
+    turtle.penup()
+    turtle.goto(0, -200)
+    turtle.pendown()
 
-turtle.exitonclick()
-```
+    draw_gosper_curve(200.0, 4)
 
-"""
+    turtle.exitonclick()