`
import re
import os
from flask import Flask, request, render_template, current_app
from flask_mail import Mail, Message
app = Flask(__name__)
app.config['MAIL_DEFAULT_SENDER'] = os.environ['MAIL_DEFAULT_SENDER']
app.config["MAIL_PASSWORD"] = os.environ["MAIL_PASSWORD"]
app.config["MAIL_PORT"] = 587
app.config["MAIL_SERVER"] = "smtp.gmail.com"
app.config["MAIL_USE_TLS"] = True
app.config["MAIL_USERNAME"] = os.environ["MAIL_USERNAME"]
mail = Mail(app)
SPORTS = [
"Basketball",
"Soccer",
"Ultimate Frisbee"
]
@app.route("/")
def index():
return render_template("index.html", sports=SPORTS)
@app.route("/register", methods=["POST"])
def register():
name = request.form.get("name")
email = request.form.get("email")
sport = request.form.get("sport")
if not name or not email or sport not in SPORTS:
return render_template("failure.html")
message = Message("You are registered!", recipients=[email])
mail.send(email)
return render_template("success.html")
`
$ python -m flask run
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "C:\Python311\Lib\site-packages\flask\__main__.py", line 3, in <module>
main()
File "C:\Python311\Lib\site-packages\flask\cli.py", line 1047, in main
cli.main()
File "C:\Python311\Lib\site-packages\click\core.py", line 1055, in main
rv = self.invoke(ctx)
^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\click\core.py", line 1657, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\click\core.py", line 1404, in invoke
return ctx.invoke(self.callback, **ctx.params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\click\core.py", line 760, in invoke
return __callback(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\click\decorators.py", line 84, in new_func
return ctx.invoke(f, obj, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\click\core.py", line 760, in invoke
return __callback(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\flask\cli.py", line 911, in run_command
raise e from None
File "C:\Python311\Lib\site-packages\flask\cli.py", line 897, in run_command
app = info.load_app()
^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\flask\cli.py", line 308, in load_app
app = locate_app(import_name, name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Python311\Lib\site-packages\flask\cli.py", line 218, in locate_app
__import__(module_name)
File "C:\*my_folders*\*my_folders*\froshimsemail\app.py", line 8, in <module>
app.config['MAIL_DEFAULT_SENDER'] = os.environ['MAIL_DEFAULT_SENDER']
~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen os>", line 678, in __getitem__
KeyError: 'MAIL_DEFAULT_SENDER'
What does error above even mean?? i am finding problem already few hours, i already uninstalled and installed it few times and checked i am on right python interpreter
Althrough this should go to the cs50 asking questions because it is from their course, but i am skeptical about how to explain my problem.
If the environment MAIL_DEFAULT_SENDER does not exist then you will get a KeyError when running os.environ['MAIL_DEFAULT_SENDER']. I think that is what is happening here.
A solution for this may be to use os.environ.get(). Here is how you might do this
app.config['MAIL_DEFAULT_SENDER'] = os.environ.get('MAIL_DEFAULT_SENDER')
This will set app.config['MAIL_DEFAULT_SENDER'] to the value of the environment variable MAIL_DEFAULT_SENDER if it exists, otherwise it is set to None.
If you want you can specify a default value as the second parameter.
app.config['MAIL_DEFAULT_SENDER'] = os.environ.get('MAIL_DEFAULT_SENDER', 'default mail sender')