README.md

Start working on your project

Each time you work on this project, you need to activate the virtual environment. From a new Terminal window:

cd helloflask
source bin/activate

You can check that your environment is active because virtualenv puts the name of the app before the

Any packages you install now using pip or easy_install get installed into helloflask/lib/python2.7/site-packages

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Run the application:

python helloflask.py

You should be able to surf to http://127.0.0.1:5000 and see a cheery “Hello World!” message.

To stop the server process, press control-C.

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List your requirements

When deploying to a webserver it is important to register which requirements we need. To do this we freeze the installed packages and store this setup in a requirements.txt file:

pip freeze > requirements.txt

This writes a plain text file that contains the names of the required Python packages and their versions, for example Flask==0.9. We’ll use this file later when we’re setting up our server..