How to Run Python Programs on Android with QPython 3L

QPython 3L: A Python Engine for Android

Do you love Python and want to use it on your Android device? Do you want to run Python scripts and projects offline without any hassle? Do you want to access Android APIs and features with Python code? If yes, then you should try QPython 3L, a powerful and versatile Python engine for Android.

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• QPython 3L is an app that allows you to run Python 3 scripts and projects on your Android device. It contains some amazing features such as: A powerful Python 3 interpreter that can execute your code offline

• A built-in Python syntax highlight editor that lets you write and edit your code easily

• A local libraries manager that helps you install and manage Python modules

• A QR code reader that enables you to transfer code to your phone

• A QPYPI service that provides prebuilt wheel packages for scientific libraries such as numpy, scipy, matplotlib, etc.

• A QSL4A library that gives you access to Android APIs such as SMS, GPS, NFC, Bluetooth, etc.

QPython 3L is mainly for experienced Python users who want to use some advanced technical features on their Android devices. It is also an open-source project that welcomes contributions from the community.

How to install QPython 3L

Installing QPython 3L is very easy and straightforward. You can download it from Google Play or other sources such as APKPure or F-Droid. Here are the steps to install QPython 3L from Google Play:

• Open Google Play on your Android device and search for QPython 3L

• Tap on the QPython 3L icon and then tap on Install

• Wait for the app to download and install on your device

• Tap on Open to launch the app and enjoy Python on your Android device

If you want to install QPython 3L from other sources, you need to enable the installation of apps from unknown sources on your device. You can do this by going to Settings > Security > Unknown sources and toggling it on. Then, you can download the APK file of QPython 3L from the official website or other sources and install it manually.

How to use QPython 3L

Using QPython 3L is very simple and intuitive. When you open the app, you will see a home screen with several icons that represent the main features of QPython 3L. You can tap on any of them to access them. Here is a brief overview of each feature:

How to run a Python script or project

If you want to run a Python script or project, you can tap on the Console icon or the Editor icon. The Console icon will take you to a Python 3 interpreter where you can type and execute your code interactively. The Editor icon will take you to a Python syntax highlight editor where you can write and edit your code in a file. You can also open an existing file from your device or create a new one.

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To run your code, you can either tap on the Start button in the Console or the Run button in the Editor. The Start button will execute your code in the interpreter and show you the output in the console. The Run button will execute your code in a separate process and show you the output in a new window. You can also use some keyboard shortcuts such as Ctrl+Enter or Shift+Enter to run your code.

How to use the QR code reader

If you want to use the QR code reader, you can tap on the QRCode icon. This will open a camera view where you can scan a QR code that contains Python code. The app will automatically import the code to your device and open it in the editor. You can then run it or modify it as you wish.

This feature is very useful if you want to transfer code from another device or source without typing or copying and pasting it. You can also generate QR codes for your own code using online tools such as

How to install and manage Python modules

If you want to install and manage Python modules, you can tap on the Libraries icon. This will take you to a local libraries manager where you can see all the installed modules on your device and their versions. You can also install new modules or uninstall existing ones.

To install a new module, you can either use the pip console or the QPYPI service. The pip console is a command-line tool that lets you use pip commands to install modules from PyPI or other sources. The QPYPI service is a web service that provides prebuilt wheel packages for some popular scientific libraries such as numpy, scipy, matplotlib, etc. You can access these services by tapping on the Pip icon or the QPYPI icon in the libraries manager.

To uninstall an existing module, you can simply tap on it and then tap on Uninstall. You can also use the pip console to uninstall modules using pip commands.

How to access Android APIs with QSL4A

If you want to access Android APIs with QSL4A, you can tap on the SL4A icon. This will take you to a SL4A console where you can use QSL4A commands to interact with Android features such as SMS, GPS, NFC, Bluetooth, etc. QSL4A is a library that wraps SL4A (Scripting Layer for Android) APIs for Python 3.

For example, if you want to send an SMS message with QSL4A, you can use this command:

droid = qpylib.androidhelper.Android() droid.smsSend('1234567890', 'Hello from QPython 3L!')

This will send an SMS message to the number 1234567890 with the text "Hello from QPython 3L!". You can also use other QSL4A commands to perform other tasks such as getting the location, reading the NFC tag, connecting to a Bluetooth device, etc. You can find more information and examples on the QSL4A documentation page:

How to contribute to QPython 3L

If you like QPython 3L and want to contribute to its development, you are more than welcome to join the QPython community and help improve the app. There are several ways you can contribute to QPython 3L:

How to report issues or suggest features

If you encounter any bugs or problems while using QPython 3L, or if you have any ideas or suggestions on how to make it better, you can report them on the GitHub repository of QPython 3L: You can file a ticket or send an email to the developers and they will try to fix or implement them as soon as possible.

How to fork and modify the source code

If you are a developer and want to fork and modify the source code of QPython 3L, you can also do that on the GitHub repository of QPython 3L: You can fork the project and make your own changes and improvements. You can also send a pull request to the original project and share your work with the community.

Conclusion

QPython 3L is a great app for Python lovers who want to use Python 3 on their Android devices. It offers a lot of features and functionalities that make Python programming easier and more fun on Android. You can run Python scripts and projects offline, use the QR code reader to transfer code, install and manage Python modules, access Android APIs with QSL4A, and contribute to the development of QPython 3L. If you are looking for a Python engine for Android, you should definitely give QPython 3L a try.

FAQs

Here are some frequently asked questions and answers about QPython 3L:

• What is the difference between QPython 3L and QPython?

QPython 3L is a Python engine that supports Python 3, while QPython is a Python engine that supports Python 2. They are both developed by the same team but have different features and compatibility. You can choose the one that suits your needs better.

• Is QPython 3L compatible with all Android devices?

QPython 3L requires Android 4.1 or higher to run. It also requires at least 200 MB of free space on your device. It should work on most Android devices but some features may not work on some devices due to hardware or software limitations.

• Can I use QPython 3L to develop Android apps?

QPython 3L is mainly for running Python scripts and projects on your Android device. It is not designed for developing Android apps. However, you can use some tools such as Kivy or PySide to create GUI apps with Python and run them on QPython 3L.

• Can I use QPython 3L offline?

Yes, you can use QPython 3L offline without any internet connection. You can run your code in the console or the editor offline. However, some features such as installing modules from PyPI or QPYPI or scanning QR codes may require internet access.

How can I learn more about QPython 3L?</l