Update app.py

app.py

@@ -1,5 +1,6 @@
 import streamlit as st
 import numpy as np 
+import sympy as sm
 
 
 st.title("Gradient Descent Visualizer")
@@ -10,6 +11,12 @@ start_point = st.text_input("Starting Point", "2")
 
 setup = st.button("Set Up")
 
+if setup:
+    try:
+        expr = func.replace("^", "**")
+        expr_final = sm.sympify(expr)
+        sp.lambdify(x, expr_final, "numpy")
+
 lr = st.text_input("Learning Rate","0.1")
 
 btn=st.button("Next Iteration")