Delete app.py

app.py

@@ -1,129 +0,0 @@
-import streamlit as st
-import math
-import pandas as pd
-
-st.set_page_config(page_title="Ultimate Calculator", page_icon="🧮", layout="centered")
-
-st.title("🧮 Ultimate Scientific Calculator")
-
-# ---------------- SESSION STATE ----------------
-if "expression" not in st.session_state:
-    st.session_state.expression = ""
-
-if "history" not in st.session_state:
-    st.session_state.history = []
-
-# ---------------- SAFE EVAL ----------------
-def safe_eval(expr):
-    allowed = {
-        "sqrt": math.sqrt,
-        "sin": math.sin,
-        "cos": math.cos,
-        "tan": math.tan,
-        "log": math.log10,
-        "pi": math.pi,
-        "e": math.e
-    }
-    try:
-        return eval(expr, {"__builtins__": None}, allowed)
-    except:
-        return "Error"
-
-# ---------------- DISPLAY ----------------
-st.markdown(f"### {st.session_state.expression or 0}")
-
-if st.session_state.expression:
-    st.write("🔎 Live Result:", safe_eval(st.session_state.expression))
-
-# ---------------- BUTTON FUNCTIONS ----------------
-def add(val):
-    st.session_state.expression += str(val)
-
-def clear():
-    st.session_state.expression = ""
-
-def delete():
-    st.session_state.expression = st.session_state.expression[:-1]
-
-def calculate():
-    result = safe_eval(st.session_state.expression)
-    st.session_state.history.append(f"{st.session_state.expression} = {result}")
-    st.session_state.expression = str(result)
-
-# ---------------- BUTTON GRID ----------------
-buttons = [
-    ["7","8","9","/"],
-    ["4","5","6","*"],
-    ["1","2","3","-"],
-    ["0",".","(",")"],
-]
-
-for row in buttons:
-    cols = st.columns(4)
-    for i, btn in enumerate(row):
-        cols[i].button(btn, on_click=add, args=(btn,))
-
-cols = st.columns(4)
-cols[0].button("+", on_click=add, args=("+",))
-cols[1].button("sqrt(", on_click=add, args=("sqrt(",))
-cols[2].button("sin(", on_click=add, args=("sin(",))
-cols[3].button("log(", on_click=add, args=("log(",))
-
-cols = st.columns(3)
-cols[0].button("C", on_click=clear)
-cols[1].button("DEL", on_click=delete)
-cols[2].button("=", on_click=calculate)
-
-st.markdown("---")
-
-# ---------------- FUNCTION PLOTTER ----------------
-st.subheader("📊 Function Plotter")
-
-plot_expr = st.text_input("Enter function in x (example: sin(x), x**2)")
-
-if st.button("Plot Graph"):
-    try:
-        x_vals = [i/10 for i in range(-100, 100)]
-        y_vals = []
-
-        for x in x_vals:
-            y = eval(
-                plot_expr,
-                {"__builtins__": None},
-                {
-                    "x": x,
-                    "sin": math.sin,
-                    "cos": math.cos,
-                    "tan": math.tan,
-                    "sqrt": math.sqrt,
-                    "log": math.log10,
-                    "pi": math.pi,
-                    "e": math.e
-                }
-            )
-            y_vals.append(y)
-
-        df = pd.DataFrame({"x": x_vals, "y": y_vals})
-        st.line_chart(df.set_index("x"))
-
-    except:
-        st.error("Invalid Function")
-
-st.markdown("---")
-
-# ---------------- HISTORY ----------------
-st.subheader("📜 History")
-
-if st.session_state.history:
-    for item in reversed(st.session_state.history):
-        st.write(item)
-
-    df = pd.DataFrame(st.session_state.history, columns=["Calculations"])
-    st.download_button(
-        "📥 Download History",
-        df.to_csv(index=False),
-        file_name="history.csv",
-        mime="text/csv"
-    )
-else:
-    st.info("No calculations yet.")