calculator

Dockerfile

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+FROM python:3.9-slim
+
+WORKDIR /app
+COPY . /app
+
+CMD ["python", "app.py"]

app.py

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+def add(a, b):
+    return a + b
+
+def subtract(a, b):
+    return a - b
+
+def multiply(a, b):
+    return a * b
+
+def divide(a, b):
+    if b != 0:
+        return a / b
+    else:
+        return "Division by zero error"
+
+def main():
+    print("Simple Python Calculator")
+    a = float(input("Enter first number: "))
+    b = float(input("Enter second number: "))
+    operation = input("Enter operation (+, -, *, /): ")
+
+    if operation == '+':
+        print(f"Result: {add(a, b)}")
+    elif operation == '-':
+        print(f"Result: {subtract(a, b)}")
+    elif operation == '*':
+        print(f"Result: {multiply(a, b)}")
+    elif operation == '/':
+        print(f"Result: {divide(a, b)}")
+    else:
+        print("Invalid operation")
+
+if __name__ == "__main__":
+    main()