"Desperate" in need of help plotting...

[Gribouillis]

Use interpolation with scipy.interpolate

import numpy as np
from scipy.interpolate import interp1d
plt.scatter(xdata, ydata, marker='.')
f = interp1d(xdata, ydata, kind='cubic')
x = np.linspace(min(xdata), max(xdata), num=200)
plt.plot(x, f(x))