|
| 1 | +# calc.py |
| 2 | +from flask import Flask, render_template_string, request |
| 3 | + |
| 4 | +app = Flask(__name__) |
| 5 | + |
| 6 | +# HTML template |
| 7 | +template = """ |
| 8 | +<!DOCTYPE html> |
| 9 | +<html> |
| 10 | +<head> |
| 11 | + <title>Flask Calculator</title> |
| 12 | + <style> |
| 13 | + body { font-family: Arial; background-color: #f5f5f5; text-align: center; padding: 50px; } |
| 14 | + input[type=number], select { padding: 10px; margin: 10px; width: 150px; } |
| 15 | + input[type=submit] { padding: 10px 20px; margin: 10px; } |
| 16 | + h1 { color: #2c3e50; } |
| 17 | + .result { margin-top: 20px; font-size: 1.5em; color: #27ae60; } |
| 18 | + </style> |
| 19 | +</head> |
| 20 | +<body> |
| 21 | + <h1>Flask Calculator</h1> |
| 22 | + <form method="POST"> |
| 23 | + <input type="number" name="num1" step="any" placeholder="First Number" required> |
| 24 | + <input type="number" name="num2" step="any" placeholder="Second Number" required> |
| 25 | + <br> |
| 26 | + <select name="operation"> |
| 27 | + <option value="add">Add (+)</option> |
| 28 | + <option value="subtract">Subtract (-)</option> |
| 29 | + <option value="multiply">Multiply (×)</option> |
| 30 | + <option value="divide">Divide (÷)</option> |
| 31 | + </select> |
| 32 | + <br> |
| 33 | + <input type="submit" value="Calculate"> |
| 34 | + </form> |
| 35 | + {% if result is not none %} |
| 36 | + <div class="result">Result: {{ result }}</div> |
| 37 | + {% endif %} |
| 38 | +</body> |
| 39 | +</html> |
| 40 | +""" |
| 41 | + |
| 42 | +@app.route("/", methods=["GET", "POST"]) |
| 43 | +def calculator(): |
| 44 | + result = None |
| 45 | + if request.method == "POST": |
| 46 | + try: |
| 47 | + num1 = float(request.form["num1"]) |
| 48 | + num2 = float(request.form["num2"]) |
| 49 | + op = request.form["operation"] |
| 50 | + |
| 51 | + if op == "add": |
| 52 | + result = num1 + num2 |
| 53 | + elif op == "subtract": |
| 54 | + result = num1 - num2 |
| 55 | + elif op == "multiply": |
| 56 | + result = num1 * num2 |
| 57 | + elif op == "divide": |
| 58 | + result = num1 / num2 if num2 != 0 else "Error: Division by zero" |
| 59 | + except ValueError: |
| 60 | + result = "Invalid input" |
| 61 | + return render_template_string(template, result=result) |
| 62 | + |
| 63 | +if __name__ == "__main__": |
| 64 | + app.run(debug=True) |
0 commit comments