# add comments throughout document to make it easier to understand wh…

…at's going on at each step

app.py

@@ -8,13 +8,16 @@
 openai.api_key = os.getenv("OPENAI_API_KEY")
 
 
-# riplit key
+# using replit method for getting API key
 # openai.api_key = os.environ["OPENAI_API_KEY"]
 
 @app.route("/", methods=("GET", "POST"))
 def index():
+ # response to form submission
  if request.method == "POST":
+ # input box value = "ond"
  ond = request.form["ond"]
+ # get Completion response using the text from "prompt"
  response = openai.Completion.create(
  model="text-davinci-003",
  prompt=extract_city_names(ond),
@@ -25,20 +28,36 @@ def index():
  # presence_penalty=0.0,
  # stop=["\n"],
  )
+ # append the choices to the end of the index url
+ # e.g. /?result=+San+Diego%2C+San+Francisco
  return redirect(url_for("index", result=response.choices[0].text))
+
+ # response to GET request (initial page load) or form submission redirect (GET)
+ # get the "result" query parameter from the url
  result = request.args.get("result")
+ # get the "ond" query parameter from the url (if it exists)
  if type(result) == str:
  result = result.split(", ")
 
  if result is not None:
- o_url = generate_prompt_image(result[0])
- d_url = generate_prompt_image(result[1])
+ # get the image urls
+ o_url = generate_prompt_image("Beautiful photo of " + result[0])
+ d_url = generate_prompt_image("Beautiful photo of " + result[1])
  return render_template("index.html", result=', '.join(result), o_url=o_url, d_url=d_url)
-
+ # if no result, return the index page without any result
  return render_template("index.html", result=result)
 
 
+def generate_prompt_image(ond_input):
+ """Returns a url for an image generated from the given prompt. Note urls expire after 1 hour."""
+ response = openai.Image.create(prompt=f"{ond_input}", n=1, size="256x256")
+ image_url = response['data'][0]['url']
+ return image_url
+
+
+# ====================Prompts for GPT-3====================
 def extract_city_names(ond):
+ """Prompt that GPT3 will use to return the city names from the form input."""
  return """Extract city names from the following prompts.
 
  Prompt: Prompt: Traveling from Minneapolis to Denver
@@ -51,7 +70,8 @@ def extract_city_names(ond):
  )
 
 
-def generate_prompt(ond_input):
+def extract_codes(ond_input):
+ """Prompt that GPT3 will use to find the code for the given city."""
  return """Get airport codes from the following prompts.
 
  Prompt: Traveling from Minneapolis to Denver
@@ -62,10 +82,7 @@ def generate_prompt(ond_input):
  Codes:""".format(ond_input).upper()
 
 
-def generate_prompt_image(ond_input):
- response = openai.Image.create(prompt=f"{ond_input}", n=1, size="256x256")
- image_url = response['data'][0]['url']
- return image_url
-
+# =========================================================
 
-app.run(host='0.0.0.0', port=81)
+# for replit, use port 81
+app.run(host='127.0.0.1', port=8080)