flask-tutorial | The flask tutorial with extra features | Continuous Deployment library
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kandi X-RAY | flask-tutorial Summary
The flask tutorial with extra features
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flask-tutorial Key Features
flask-tutorial Examples and Code Snippets
Lines of Code : 15
License : No License
Copydef index_lulu():
nquestions=app_lulu.nquestions
if request.method == 'GET':
return render_template('userinfo_lulu.html',num=nquestions)
else:
#request was a POST
app_lulu.vars['name'] = request.form['name_lulu']
def index_lulu():
nquestions=5
if request.method == 'GET':
return render_template('userinfo_lulu.html',num=nquestions)
else:
#request was a POST
app_lulu.vars['name'] = request.form['name_lulu']
app_lulu.va def next_lulu2(): #can't have two functions with the same name
# Here, we will collect data from the user.
# Then, we return to the main function, so it can tell us whether to
# display another question page, or to show the end page.
Community Discussions
Trending Discussions on flask-tutorial
QUESTION
Trying a simple python flask web app in docker 20.10.2, build 2291f61.
Doing the: docker build -t hello-world . starts out ok (please see below), but ends with:
ANSWER
Answered 2021-Feb-27 at 01:41You should change the RUN lines in the Dockerfile with apt-get in them to use the -y flag to skip asking you to confirm "yes".
The Dockerfile in the tutorial actually seems out of date or has errors in it. You need to use pip3 now to install Flask and also include the -y flag in your apt-get commands. I edited the Dockerfile from the tutorial and posted below:
QUESTION
I am trying to get the logic of using jQuery AJAX and Flask, however I am not coming right. I have been following tutorials here and here, but no resolution. To get the logic - I simply want to input dates in two separate fields, and return those dates to the same page in a normal
tag. My suspicion is a problem in the server receiving the dates. Submitting the relative form does not return anything to #result
HTML FORM
...ANSWER
Answered 2021-Feb-05 at 21:58Please use the button to send the form, an anchor within the form does not make sense.
I would advise you to use the "submit" event
of the form, although the "click" event of the button would also work. The preventDefault function bypasses the standard behavior of the form, so that you can send the form yourself using getJSON. To serialize the form data, I use the serialize
function which converts all form data into a conforming string. Thus the data is sent as "application/x-www-form-urlencoded".
The variable $SCRIPT_ROOT is not used by me in this example because it is
basically empty under localhost and is not absolutely necessary.
QUESTION
I have just started to learn Flask, and I'm following a tutorial to create a login form, and I'm getting an error while trying to load the website, I'm doing the exact same thing like the guy in the tutorial, I'm running Ubuntu and coding in VS-Code, why is this happening ?
Tutorial and the status code of the request is 405.
Error: 405 - The method is not allowed for the requested URL.
Program:
...ANSWER
Answered 2020-May-12 at 10:37It's probably because you are trying to access /login with a GET request. You have 2 options:
- Allow
GETrequests for the/loginendpoint (which is probably not the best way to solve this):
QUESTION
- Python 2.7.13
- Windows 10 64 bit
I've been working through this Udacity web dev course and wanted to try embedding a simple bokeh plot into a web page using this example. Running dev_appserver.py gives the error: ImportError: No module named _ctypes
I have:
- Installed Bokeh and Numpy via pip
- Included Numpy in app.yaml
This answer states Google App Engine doesn't allow importing ctypes. However I'm unsure how to confirm if this is the case with Bokeh. Is this error caused by Bokeh importing ctypes? If so is there a work around?
...ANSWER
Answered 2017-May-25 at 19:07Edit: Please see the answer below for a new workaround from Google.
I can state categorically that Bokeh itself does not use ctypes directly, anywhere in the library. But it does use NumPy, and it seems that at least some versions of NumPy do use ctypes? This link:
http://kawahara.ca/using-numpy-on-google-app-engine-with-the-anaconda-python-distribution/
seems to suggest that only version 1.6 of NumPy is supported on GAE. I might assume this is either because that version does not use ctypes, or because Google has specifically whitelisted that version as acceptable somehow.
So the suggestion would be specifically install NumPy 1.6, and not the latest version (either using pip or conda or whatever).
QUESTION
I'm working on a simple Flask app for wich I'm using the dafault template:
...ANSWER
Answered 2019-Aug-16 at 05:31you need to expose port 5000 in your Dockerfile:
QUESTION
Upgrading pip does not do anything, just tells me to upgrade Pip again and that the requirements are satisfied--however, I am on an old pip version. This is Python27, I get the same issue whether I am in a virtual environment or not.
Output:
...ANSWER
Answered 2019-Jul-16 at 17:19I think it how to update pip will help you and make sure that you are running command prompt as Administrator. you can do this by right click on the "Command Prompt" application and choose "Run as administrator" and type this command in your command prompt.
QUESTION
I'm new to Python Flask development and VS Code. I've been trying to create an app by referring the below tutorials.
https://code.visualstudio.com/docs/python/tutorial-flask
https://github.com/Microsoft/python-sample-vscode-flask-tutorial\
https://code.visualstudio.com/docs/python/debugging
Repo for reference: https://github.com/iamshivprasad/analytics
Cloned folder structure is:
...ANSWER
Answered 2019-Jun-03 at 14:32It looks like turning on the automatic reload (by removing the "--no-reload" flag), makes the VS Code debugger not work anymore. VS code guys say they are working on it: https://github.com/Microsoft/vscode-python/issues/4355.
So, for the moment, you should add the "no-reload" and "no-debugger" flags in the launch.json args section.
This launch.json configuration will make VS Code debugger work:
QUESTION
I'm going through the Flask tutorial, and I encounter a problem where I can't use pip (and thus anything else really) a venv in Powershell. The same flask app runs correctly in an Ubuntu terminal with Python 3.6.6 in WSL.
The problem seems to depend on the directory, which makes me think it's somehow related to file path length; I enabled long file paths in the windows Group Editor but this hasn't fixed the problem. In the below steps my venv directory is c:\users\rwgpu\google-drive\code\flask-tutorial\winEnvflaskr\ and I experience the error, but everything works correctly in the directory C:\python\test\testVenv. (in each case I'm running the commands in the directory one up from the listed above, flask-tutorial and test respectively)
Minimal steps to reproduce are:
Completely fresh Python 3.7 installation.
Change directory to app folder.
...ANSWER
Answered 2018-Oct-08 at 13:45Well, I still don't know why this was happening -- it persisted through deleting and recreating the venv (obviously), but when I deleted the entire folder, that somehow cleared it up. I just copied the code into a new directory in the same parent and everything seems to be working ¯\_(ツ)_/¯
If anyone knows what would cause this in my case I still welcome input.
QUESTION
I am following the tutorial by http://www.patricksoftwareblog.com/flask-tutorial/, which I believe is based on https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world. Great stuff for a beginner.
I am getting different results when testing my code through frontend manually (which works fine) v.s. through pytest.
My test tries to show the "groups" endpoint which requires a login (standard @login_required decorator).
- I initially test the user getting a login page ("Knock knock") when trying to get the endpoint without a login. This works manually and through pytest.
- I login a user. If I inspect the response from the login I can clearly see a "Welcome back Pete!" success message.
- My second assert receives a response from URL
/login?next=%2Fgroupsindicating the/groupsendpoint is called without a login/authentication preceding it and the assert fails. Testing this manually works as expected. Why is that single test not using the same user/session combination in the next step(s)?
Test with the problem is the first snippet below:
...ANSWER
Answered 2018-Jul-22 at 22:51Im going to sum up the comments I made that gave the answer on how to solve this issue.
When creating a test app using Pytest and Flask there are a few different ways to go about it.
The suggested way to create a test client with proper app context is to use something like:
QUESTION
I am following this video to create an image gallery using flask and python https://www.youtube.com/watch?v=yO_XNCsBIsg&t=636s
I these github files for (coppied the @app.route('/gallery')) app.py and gallery.html and ran the exact code but I am getting an error:
...ANSWER
Answered 2018-Apr-23 at 04:28You are missing the "send_image" route in your Python code:
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Install flask-tutorial
You can use flask-tutorial like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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