My code is this:
# A very simple Flask Hello World app for you to get started with...
from flask import Flask, request
import requests
app = Flask(__name__)
@app.route('/', methods = ["GET", "POST"])
def hello_world():
if request.method == "POST":
countries = request.form["Enter Countries"]
return '''
<html>
<body>
<p>The countries you asked us to graph are {result}</p>
<p><a href="/">Click here to calculate again</a>
</body>
</html>
'''.format(result = countries)
else:
return
'''
<html>
<body>
<p>Enter your numbers:</p>
<form method="post" action=".">
<p><input name="Enter Countries" /></p>
<p><input type="submit" value="Graph Countries" /></p>
</form>
</body>
</html>
'''
The error I am receiving is this: 2020-06-27 19:54:00,854: Exception on / [GET] Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/flask/app.py", line 2446, in wsgi_app response = self.full_dispatch_request() File "/usr/lib/python3.8/site-packages/flask/app.py", line 1952, in full_dispatch_request return self.finalize_request(rv) File "/usr/lib/python3.8/site-packages/flask/app.py", line 1967, in finalize_request response = self.make_response(rv) File "/usr/lib/python3.8/site-packages/flask/app.py", line 2096, in make_response raise TypeError( TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement. 2020-06-27 19:54:23,055: Exception on / [GET] Traceback (most recent call last): File "/usr/lib/python3.8/site-packages/flask/app.py", line 2446, in wsgi_app response = self.full_dispatch_request()
Please forgive me for being clueless, I am new to python anywhere. That being said, please help me find what is causing this error.
glenn
|
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posts
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PythonAnywhere staff
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