Demo: Code review

examples/demo/main.py

@@ -0,0 +1,67 @@
+import random
+import time
+
+# Global variable
+GLOBAL_COUNTER = 0
+
+
+def process_data(data):
+    global GLOBAL_COUNTER
+    result = []
+    for i in range(len(data)):
+        item = data[i]
+        if item % 2 == 0:
+            result.append(item * 2)
+        else:
+            result.append(item * 3)
+        GLOBAL_COUNTER += 1
+    return result
+
+
+def fetch_user_data(user_id):
+    # Simulating a database query
+    time.sleep(2)
+    return {"id": user_id, "name": f"User{user_id}", "score": random.randint(1, 100)}
+
+
+def calculate_average(numbers):
+    total = 0
+    count = 0
+    for num in numbers:
+        total += num
+        count += 1
+    return total / count if count > 0 else 0
+
+
+def write_to_file(filename, content):
+    f = open(filename, "w")
+    f.write(content)
+    f.close()
+
+
+def main():
+    data = [1, 2, 3, 4, 5]
+    processed_data = process_data(data)
+    print("Processed data:", processed_data)
+
+    user_data = fetch_user_data(123)
+    print("User data:", user_data)
+
+    numbers = [10, 20, 30, 40, 50]
+    avg = calculate_average(numbers)
+    print("Average:", avg)
+
+    write_to_file("output.txt", "Hello, World!")
+
+    unused_var = 42
+    print("Unused variable:", unused_var)
+
+    db_password = "password123"
+    print("DB Password:", db_password)
+
+    squared_numbers = [num * num for num in range(100)]
+    print("Squared numbers:", squared_numbers)
+
+
+if __name__ == "__main__":
+    main()