Delete app.py

app.py

@@ -1,159 +0,0 @@
-import streamlit as st
-import math
-import pandas as pd
-
-st.set_page_config(page_title="Mobile Calculator", page_icon="🧮", layout="centered")
-
-# ---------------- SESSION ----------------
-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"
-
-# ---------------- STYLE ----------------
-st.markdown("""
-<style>
-body {background-color:#0f172a;}
-.display {
-    background:#1e293b;
-    color:white;
-    padding:20px;
-    border-radius:20px;
-    font-size:32px;
-    text-align:right;
-    margin-bottom:10px;
-}
-.stButton>button {
-    height:65px;
-    border-radius:20px;
-    font-size:22px;
-    font-weight:bold;
-}
-</style>
-""", unsafe_allow_html=True)
-
-st.title("🧮 Advanced Mobile Calculator")
-
-# ---------------- DISPLAY ----------------
-st.markdown(f"<div class='display'>{st.session_state.expression or 0}</div>", unsafe_allow_html=True)
-
-if st.session_state.expression:
-    st.write("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)
-
-# ---------------- MOBILE GRID ----------------
-
-layout = [
-    ["C", "DEL", "(", ")"],
-    ["7", "8", "9", "/"],
-    ["4", "5", "6", "*"],
-    ["1", "2", "3", "-"],
-    ["0", ".", "+", "="],
-]
-
-for row in layout:
-    cols = st.columns(4)
-    for i, button in enumerate(row):
-        if button == "C":
-            cols[i].button(button, on_click=clear)
-        elif button == "DEL":
-            cols[i].button(button, on_click=delete)
-        elif button == "=":
-            cols[i].button(button, on_click=calculate)
-        else:
-            cols[i].button(button, on_click=add, args=(button,))
-
-st.markdown("---")
-
-# ---------------- SCIENTIFIC SECTION ----------------
-st.subheader("Scientific Functions")
-
-sci_cols = st.columns(4)
-sci_cols[0].button("sqrt(", on_click=add, args=("sqrt(",))
-sci_cols[1].button("sin(", on_click=add, args=("sin(",))
-sci_cols[2].button("cos(", on_click=add, args=("cos(",))
-sci_cols[3].button("log(", on_click=add, args=("log(",))
-
-st.markdown("---")
-
-# ---------------- GRAPH PLOT ----------------
-st.subheader("📊 Plot Function")
-
-plot_expr = st.text_input("Enter function in x (example: sin(x), x**2)")
-
-if st.button("Plot"):
-    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"
-    )
-else:
-    st.info("No calculations yet.")