Create Calc.py

TheAlgorithms · sgindeed · Oct 6, 2025 · Oct 6, 2025 · Oct 6, 2025 · Oct 6, 2025
commit eacebd7fed6e473d12710e8fc559796e92eb5ca3
diff --git a/other/Calc.py b/other/Calc.py
@@ -0,0 +1,85 @@
+from flask import Flask, request, render_template_string
+
+app = Flask(__name__)
+
+def calculate(num1: float, num2: float, operation: str) -> float:
+ """
+ Perform basic arithmetic operations: add, subtract, multiply, divide.
+
+ >>> calculate(2, 3, 'add')
+ 5
+ >>> calculate(5, 3, 'subtract')
+ 2
+ >>> calculate(4, 2, 'multiply')
+ 8
+ >>> calculate(10, 2, 'divide')
+ 5.0
+ >>> calculate(5, 0, 'divide')
+ Traceback (most recent call last):
+ ...
+ ValueError: Division by zero is not allowed.
+ """
+ if operation == "add":
+ return num1 + num2
+ elif operation == "subtract":
+ return num1 - num2
+ elif operation == "multiply":
+ return num1 * num2
+ elif operation == "divide":
+ if num2 == 0:
+ raise ValueError("Division by zero is not allowed.")
+ return num1 / num2
+ else:
+ raise ValueError(f"Unknown operation: {operation}")
+
+# HTML template for the web interface
+template = """
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Flask Calculator</title>
+ <style>
+ body { font-family: Arial, sans-serif; text-align: center; padding: 50px; background: #f7f7f7; }
+ input, select { padding: 10px; margin: 5px; width: 150px; }
+ input[type=submit] { width: auto; cursor: pointer; }
+ .result { margin-top: 20px; font-size: 1.5em; color: #27ae60; }
+ h1 { color: #2c3e50; }
+ </style>
+</head>
+<body>
+ <h1>Flask Calculator</h1>
+ <form method="POST">
+ <input type="number" name="num1" step="any" placeholder="First Number" required>
+ <input type="number" name="num2" step="any" placeholder="Second Number" required>
+ <br>
+ <select name="operation">
+ <option value="add">Add (+)</option>
+ <option value="subtract">Subtract (-)</option>
+ <option value="multiply">Multiply (×)</option>
+ <option value="divide">Divide (÷)</option>
+ </select>
+ <br>
+ <input type="submit" value="Calculate">
+ </form>
+ {% if result is not none %}
+ <div class="result">Result: {{ result }}</div>
+ {% endif %}
+</body>
+</html>
+"""
+
+@app.route("/", methods=["GET", "POST"])
+def home():
+ result = None
+ if request.method == "POST":
+ try:
+ num1 = float(request.form["num1"])
+ num2 = float(request.form["num2"])
+ op = request.form["operation"]
+ result = calculate(num1, num2, op)
+ except Exception as e:
+ result = str(e)
+ return render_template_string(template, result=result)
+
+if __name__ == "__main__":
+ app.run(debug=True)