Basic_to_advance_python_codes-/Professional Calculator.py at main · RavendraPatel09/Basic_to_advance_python_codes- · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
import streamlit as st
import math

# ---------------- Page Config ----------------
st.set_page_config(
    page_title="Advanced Calculator",
    page_icon="🧮",
    layout="centered"
)

# ---------------- CSS ----------------
st.markdown("""
<style>
.calc-card {
    background: #0f172a;
    padding: 25px;
    border-radius: 20px;
    width: 360px;
    margin: auto;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.display {
    background: #020617;
    color: #22c55e;
    font-size: 34px;
    padding: 18px;
    text-align: right;
    border-radius: 12px;
    margin-bottom: 15px;
    font-family: monospace;
}
button[kind="primary"] {
    background-color: #2563eb;
}
.stButton>button {
    width: 100%;
    height: 55px;
    font-size: 18px;
    border-radius: 12px;
}
.history {
    color: #94a3b8;
    font-size: 14px;
}
</style>
""", unsafe_allow_html=True)

# ---------------- State ----------------
if "expr" not in st.session_state:
    st.session_state.expr = ""

if "history" not in st.session_state:
    st.session_state.history = []

# ---------------- Functions ----------------
SAFE_DICT = {
    "sqrt": math.sqrt,
    "sin": math.sin,
    "cos": math.cos,
    "tan": math.tan,
    "log": math.log10,
    "pi": math.pi,
    "e": math.e
}

def press(val):
    st.session_state.expr += str(val)

def clear():
    st.session_state.expr = ""

def calculate():
    try:
        result = eval(st.session_state.expr, {"__builtins__": None}, SAFE_DICT)
        st.session_state.history.insert(0, f"{st.session_state.expr} = {result}")
        st.session_state.expr = str(result)
    except:
        st.session_state.expr = "Error"

# ---------------- UI ----------------
st.markdown('<div class="calc-card">', unsafe_allow_html=True)

st.markdown(
    f'<div class="display">{st.session_state.expr or "0"}</div>',
    unsafe_allow_html=True
)

mode = st.toggle("Scientific Mode")

# -------- Buttons --------
if not mode:
    buttons = [
        ["7","8","9","/"],
        ["4","5","6","*"],
        ["1","2","3","-"],
        ["0",".","=","+"]
    ]
else:
    buttons = [
        ["sin(","cos(","tan(","sqrt("],
        ["log(","pi","e","/"],
        ["7","8","9","*"],
        ["4","5","6","-"],
        ["1","2","3","+"],
        ["0",".","=","C"]
    ]

for row in buttons:
    cols = st.columns(4)
    for i, b in enumerate(row):
        with cols[i]:
            if b == "=":
                st.button(b, on_click=calculate, type="primary")
            elif b == "C":
                st.button(b, on_click=clear)
            else:
                st.button(b, on_click=lambda x=b: press(x))

st.markdown("</div>", unsafe_allow_html=True)

# ---------------- History ----------------
if st.session_state.history:
    st.markdown("### 🧾 History")
    for h in st.session_state.history[:5]:
        st.markdown(f"<div class='history'>{h}</div>", unsafe_allow_html=True)

st.markdown(
    "<p style='text-align:center;color:gray;'>Advanced Calculator • Streamlit</p>",
    unsafe_allow_html=True
)