Converting from CubicBezier to Poly1D doesnt work correctly

[Fischchen]

Hey everyone!

I'm currently having a problem with this libary where CubicBezier curves when turned into poly1d sometimes end up being linear or end in other garbage.

This is the wanted path:

And this is what I get:

As you can see, for some reason it converts all curves into diagonals or some weird mix. I'd appreciate any help or pointers in the right direction. This is my Code:

import turtle

import numpy as np
from svgpathtools import svg2paths, Line, CubicBezier

from pprint import pprint
from PIL import Image, ImageDraw

s = turtle.getscreen()
t = turtle.Turtle()
t.speed(0)

paths, attributes = svg2paths("Logo - Kopie.svg")  # type: ignore

scale_factor = -0.25

t.penup()
for path in paths:
    for curve in path:
        pprint(curve)
        if isinstance(curve, Line):
            t.goto(-curve.start.real * scale_factor, curve.start.imag * scale_factor)
            t.pendown()
            t.goto(-curve.end.real * scale_factor, curve.end.imag * scale_factor)
            t.penup()

        elif isinstance(curve, CubicBezier):
            #! Something is wrong here
            poly_curve = curve.poly()
            poly_curve = np.poly1d(poly_curve)
            print(poly_curve)
            x_values = np.linspace(curve.start.real, curve.end.real, 250)
            y_values = np.linspace(curve.start.imag, curve.end.imag, 250)

            t.goto(-curve.start.real * scale_factor, curve.start.imag * scale_factor)
            t.pendown()
            for x, y in zip(x_values, y_values):

                t.goto(-x * scale_factor, y * scale_factor)
            t.penup()

input("Press Enter to continue...")
print("Done")

Best regards, Fischchen