Here is my Flask API project, written as a single file called api.py: import time In the spirit of keeping things simple, for this example I'm going to create a small, single file and single endpoint application. In particular, you can use large and complex structures such as those in my Flask Mega-Tutorial or O'Reilly Flask book, as well as much simpler single file applications. The Flask project can have any structure that you like, as long as its root is this new api subdirectory. If you are using Windows, then you will do this instead: $ python -m venv venvįor this simple example I need only two Python packages, the obvious Flask and also python-dotenv: (venv) $ pip install flask python-dotenv Note that the above is for Unix-based operating systems. I always create a virtual environment called venv in my project directory, so let's do that now: $ python3 -m venv venv Since I want to have both the frontend and backend combined into a single project, my preference here is to add one more top-level subdirectory where the Flask project will live: $ mkdir api The next step is to create the Flask project. rw-r-r- 1 mgrinberg staff 890 Feb 10 15:04 package.jsonĭrwxr-xr-x 8 mgrinberg staff 256 Feb 10 14:54 publicĭrwxr-xr-x 10 mgrinberg staff 320 Feb 10 23:50 src If you list the directory you should see the top-level structure, which should be more or less like this: $ ls -l Since you will work on this project from now on, you can cd into react-flask-app so that it is your current directory. When this command completes, you will have a react-flask-app directory with a complete and fully functional simple react project. The second argument is the name of the project to create. The first argument is the command to execute. It is a simple project runner that downloads the requested command if it isn't already available and in the system's PATH. For this example I used the create-react-app generator to create a simple React project to start from: $ npx create-react-app react-flask-app I prefer to start from the frontend because the project structure is much more complex than the backend. There are several ways to create a combined project with React and Flask. Please install these three packages using the instructions for your operating system before continuing with the tutorial. Python: A recent Python 3 interpreter to run the Flask backend on.Yarn: A package and project manager for Node.js applications.Node.js: The JavaScript runtime that you will use to run your frontend project.The pull-off force was greatly reduced in these pierced suckers, indicating that suction is the primary factor in achieving attachment.You need to install three packages on your machine: They evaluated this by piercing the walls of a sucker, thus impairing the sucker’s ability to achieve a tight seal. The authors further confirmed that the attachment of suckers is largely achieved via suction, rather than other mechanisms such as adhesion. These results suggest that the octopus brain plays a critical role in controlling sucker detachment, while sucker attachment is readily achieved without input from the brain. They observed that while suckers on each type of arm readily attach to an object, detachment required significantly more force in amputated arms. The team of engineers and biologists investigated this through a series of experiments conducted on intact and amputated octopus arms. Hamid Marvi and his colleagues at Arizona State University (ASU) in collaboration with researchers from The University of Arizona, and The University of California, Los Angeles (UCLA) have shed light on the degree to which octopus suckers are controlled by nerves within the arm versus the brain. In a recent paper published in Advanced Intelligent Systems, Prof. This ability to react and adapt to local conditions without the need for a central controller has the potential to revolutionize the field of robotics. The suckers, in particular, are incredibly versatile, assisting with sensing, manipulation of prey, and locomotion. With nearly two-thirds of their neurons residing in the eight arms, these appendages are able to sense and respond to environmental conditions with little to no input from the brain. The remarkably agile arms of the octopus are a source of inspiration for the design of autonomous robots.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |