Add new file

sample_code.py

+# sample_code.py
+
+def add(a, b):
+    """Add two numbers."""
+    return a + b
+
+def subtract(a, b):
+    """Subtract the second number from the first."""
+    return a - b
+
+def multiply(a, b):
+    """Multiply two numbers."""
+    return a * b
+
+def divide(a, b):
+    """Divide the first number by the second, handling division by zero."""
+    if b == 0:
+        return "Cannot divide by zero"
+    return a / b
+
+def power(base, exponent):
+    """Raise a base number to an exponent."""
+    return base ** exponent
+
+def is_palindrome(s):
+    """Check if a string is a palindrome (ignores case and spaces)."""
+    s = s.replace(" ", "").lower()
+    return s == s[::-1]
+
+def count_vowels(s):
+    """Count the number of vowels in a string."""
+    vowels = "aeiouAEIOU"
+    return sum(1 for char in s if char in vowels)
+
+def factorial(n):
+    """Calculate the factorial of a non-negative integer."""
+    if n < 0:
+        return "Invalid input - must be a non-negative integer"
+    elif n == 0 or n == 1:
+        return 1
+    else:
+        result = 1
+        for i in range(2, n + 1):
+            result *= i
+        return result
+
+def fibonacci(n):
+    """Generate the nth Fibonacci number."""
+    if n < 0:
+        return "Invalid input - must be a non-negative integer"
+    elif n == 0:
+        return 0
+    elif n == 1:
+        return 1
+    else:
+        a, b = 0, 1
+        for _ in range(2, n + 1):
+            a, b = b, a + b
+        return b
+
+def is_prime(n):
+    """Check if a number is a prime number."""
+    if n <= 1:
+        return False
+    for i in range(2, int(n ** 0.5) + 1):
+        if n % i == 0:
+            return False
+    return True