{"id":375,"date":"2017-09-06T14:53:28","date_gmt":"2017-09-06T19:53:28","guid":{"rendered":"http:\/\/bluegalaxy.info\/codewalk\/?p=375"},"modified":"2019-06-15T16:46:50","modified_gmt":"2019-06-15T21:46:50","slug":"flask-how-to-get-up-and-running-in-less-than-5-minutes","status":"publish","type":"post","link":"https:\/\/bluegalaxy.info\/codewalk\/2017\/09\/06\/flask-how-to-get-up-and-running-in-less-than-5-minutes\/","title":{"rendered":"Flask: How to get up and running in less than 5 minutes"},"content":{"rendered":"

The following instructions are for running Flask on Windows with Python 3 (Anaconda).<\/p>\n

To run Flask, you will first need to install Flask in your Python Scripts folder. To do this, run `pip install flask` in a command window. Then confirm that the installation was successful by loading python and giving it the import flask<\/code>\u00a0command.<\/p>\n

\"\"<\/p>\n

If there is no error when importing Flask, it means that Flask is installed.<\/p>\n

Next, create a Flask folder that you will run your Flask app from. For this example I created a ‘flask_test’ folder on my desktop.<\/p>\n

Then you will need to create a .py script written for Flask and place it in the folder. Note: After you run this script, Flask will automatically create a __pycache__ folder. For example:<\/p>\n

\"\"<\/p>\n

Let’s back up a step and actually create the code in the hello.py script. The following code represents a very basic Flask script:<\/p>\n

from flask import Flask\n\napp = Flask(__name__)\n\n@app.route('\/')\n@app.route('\/hello')\ndef hello_world():\n    return 'Hello World!'\n\n@app.route('\/esp')\ndef hola_mundo():\n    return 'Hola mundo!'<\/pre>\n
Now that the code is saved as hello.py and placed in the flask_test folder, we can run it via the following command prompt commands one at a time. Note: for command window, I am using ConEmu (x64)<\/a>, but the cmd.exe that comes with Windows would work also.<\/p>\n
    \n
  1. \n
      \n
    1. cd to the location of your Python installation: cd C:\\Users\\christon\\AppData\\Local\\Continuum\\Anaconda3<\/code><\/li>\n
    2. Tell Flask what python script you want to run: set FLASK_APP=C:\\Users\\christon\\Desktop\\flask_test\\hello.py<\/code><\/li>\n
    3. Turn on Flask debug mode: set FLASK_DEBUG=1<\/code><\/li>\n
    4. Tell python to run flask: python -m flask run<\/code>Note: ‘-m’ means module name.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
      \"\"<\/p>\n
      Finally, point your browser at the server location generated by Flask. This can be either http:\/\/127.0.0.1:5000 or http:\/\/localhost:5000. For example, if you point your browser at default url \/ or \/hello:<\/p>\n
      \"\"<\/p>\n
      If you point your browser at \/esp, Flask will route you accordingly:<\/p>\n
      \"\"<\/p>\n
      To recap, here are the steps to get up and running with Flask:<\/p>\n
        \n
      1. Make sure Flask is installed in your Python Scripts folder using pip install<\/li>\n
      2. Confirm that flask is installed in Python using import flask<\/code><\/li>\n
      3. Create a Flask project folder<\/li>\n
      4. Create your .py script and drop it into the flask folder<\/li>\n
      5. Run commands to initiate Flask via command prompt<\/li>\n
      6. Point your browser at the web server that Flask provides<\/li>\n<\/ol>\n
        Notes: When you make changes to your .py script, you should see the changes in your web browser when reloading.<\/p>\n","protected":false},"excerpt":{"rendered":"
        The following instructions are for running Flask on Windows with Python 3 (Anaconda). To run Flask, you will first need to install Flask in your Python Scripts folder. To do this, run `pip install flask` in a command window. Then confirm that the installation was successful by loading python and giving it the import flask\u00a0command. … Continue reading Flask: How to get up and running in less than 5 minutes<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[29,4],"class_list":["post-375","post","type-post","status-publish","format-standard","hentry","category-flask","tag-flask","tag-python"],"_links":{"self":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/comments?post=375"}],"version-history":[{"count":22,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/375\/revisions"}],"predecessor-version":[{"id":2786,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/posts\/375\/revisions\/2786"}],"wp:attachment":[{"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/media?parent=375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/categories?post=375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bluegalaxy.info\/codewalk\/wp-json\/wp\/v2\/tags?post=375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}