Using tkinter slider inputs to calculate black scholes options price, using lambda doesn't work

Question

I am trying to use the following code in jupyter notebook to vary the inputs of a blackscholes prices using the tkslider. However, the calculate button doesn't seem to be working - I just get a GUI window that shows me the 3 slides and a calculate button that doesn't print the blackscholes price.

import numpy as np
from tkinter import *


def blackscholes(F,K,T,sigma,Type="p"):
    d1 = (np.log(F/K)+((sigma**2)/2)*T)/(sigma*np.sqrt(T))
    d2 = d1-sigma*np.sqrt(T)
    try:
        if Type=="p":
            price = F*norm.cdf(d1,0,1)-K*norm.cdf(d2,0,1)
        elif Type=="r":
            price = K*norm.cdf(-d2,0,1)-F*norm.cdf(-d1,0,1)
        return price
    except:
        print("rrr")

window = Tk()

def calculate_values(Strike):
    F = Fscale.get()
    sigma=sigmascale.get()
    T = Tscale.get()
    l.configure(text=blackscholes(F,Strike,T,sigma,"p"))

l=Label(window,text='')
    
Fscale=Scale(window,from_=1,to=1000,orient=HORIZONTAL,label="F")
Fscale.pack()

sigmascale=Scale(window,from_=1,to=1000,orient=HORIZONTAL,label="sigma")
sigmascale.pack()

Tscale=Scale(window,from_=1,to=100,orient=HORIZONTAL,label="T")
Tscale.pack()

blackscholes_button=Button(window, text='Calculate',command=lambda: calculate_values(Strike=10))

blackscholes_button.pack()

window.mainloop()