Stop the server by pressing Ctrl+C (use the special Termux key for Control). This does open ports on your phone, so use this wisely. To make your server visible to others, you can disable Flask's debugging mode by adding -host=0.0.0.0 to the run command. You're only running a local server, meaning that your phone isn't accepting requests from the outside world. You haven't compromised your phone's security. That's just six lines of code, but with that you import Flask, create an app, and route incoming traffic to the function called hello_world. If you have a different editor you prefer, such as jove, jed, joe, or emacs, you can install and use one of those instead.įor now, because this demonstration app is so simple, you can also just use the shell's heredoc function, which allows you to enter text directly at your prompt: (env)$ cat > hello_world.py If you’re unfamiliar with vi, install and try the vimtutor application, which (as its name suggests) can teach you how to use this editor. To do this, you should have experience with a classic text editor. All you need now is to write the code for your app. Now install the Flask Python module using pip: (env) $ pip install flask Write Python code on Android Notice that your shell prompt is now preceded by (env) to indicate that you're in a virtual environment. $ python -m venv venvĪctivate your new virtual environment (note that the two dots at the start are separated by a space): $. Within your virtual environment, you'll be able to install Python modules specific to your app. This is a common practice among Python developers, and it helps keep your Python project independent of your development system (in this case, your phone). Next, create a Python virtual environment. Start by creating a project directory: $ mkdir Source This is a great demonstration of just how powerful a terminal really is. Now that you have a terminal installed, you can work on your Android phone largely as if it were just another Linux computer. Once the installation and auto set-up of configuration is complete, it’s time to build your application. It doesn't require any special permissions You can use either the default Google Play store or the open source app repository F-Droid to install. Termux is a powerful terminal emulator that offers all the most popular Linux commands, plus hundreds of additional packages for easy installation. Install Termux on Androidįirst, install the Termux application. And best of all, it all happens on the phone. I use the Flask framework to create a simple “Hello, World!” app running on a simple but powerful web server. In this article, I'll demonstrate all of the tools, software packages, steps, and all the bells and whistles required to build, run, and test a simple Python application on any Android mobile device. This would change how you view your mobile device entirely, changing it from a device that merely lets you consume content to a device that helps you be creative. Imagine building and running python applications, whether it's a command-line tool developed to fetch your favorite curated articles from the Internet, or starting a web server that runs right in the palm of your hand, all with just an Android mobile device and open source tools. Free online course: RHEL Technical Overview.If this is the case, you'll need to temporarily disable your antivirus to let the installation complete. It may prevent legitimate programs from accessing necessary folders when they try to install (Malwarebytes Premium has been known to do this). However, your antivirus can also become overzealous. If it's a tool you once trusted, it's possible that the app has been hijacked, or that you downloaded a bad copy from a shady website. Avoid installing anything that's infected, of course. If you suspect that a program you want to install contains malware, you should scan it with an online virus scanner. Try opening your security suite and checking for recent alerts to find out if this is the case. But if you've disabled notifications from your antivirus, you might not see this warning. When your antivirus detects this, it will hopefully block you from installing that app. In one case, you may be trying to install a program that's actually malware. This can be helpful or a pain, depending on the circumstance. Sometimes, your antivirus or anti-malware software can prevent software from installing on Windows.
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