Added documentation

app.py

@@ -14,12 +14,25 @@ app = Flask(__name__)
 openai.api_key = os.getenv("OPENAI_KEY")
 
 
-def format_message(message):
+def format_message(message: str) -> list:
+    """
+    Formats the message to send to chatgpt
+
+    Args:
+        message: The message to send to chatgpt
+
+    Returns:
+        The formatted message in a list
+
+    Raises:
+        None
+    """
+
     return [
         {
             "role": "system",
             "content": (
-                "You are a very knowledgeable person," " with random knowledge for everything the humanity has ever done"
+                "You are a very knowledgeable person with random knowledge for everything the humanity has ever done"
             ),
         },
         {"role": "user", "content": message},
@@ -27,6 +40,19 @@ def format_message(message):
 
 
 def extract_html_from_chatgpt_response(returned_string: str) -> Union[str, None]:
+    """
+    Extracts the HTML from the chatgpt response
+
+    Args:
+        returned_string: The string returned by chatgpt
+
+    Returns:
+        The HTML if it is valid, None otherwise
+
+    Raises:
+        None
+    """
+
     validator = HTMLParser(strict=True)
     try:
         validator.parse(returned_string)
@@ -46,6 +72,19 @@ def extract_html_from_chatgpt_response(returned_string: str) -> Union[str, None]
 
 
 def get_chatgpt_response(message: str) -> str:
+    """
+    Gets the response from chatgpt
+
+    Args:
+        message: The message to send to chatgpt
+
+    Returns:
+        The HTML response from chatgpt
+
+    Raises:
+        None
+    """
+
     try:
         completion = openai.ChatCompletion.create(
             model="gpt-3.5-turbo",