Name the file requirements.txt and add the following text:.Although you will not use the Flask API library until later in the tutorial, follow these steps to install it now: It is the convention typically used by developers that makes it easier to manage applications where numerous libraries exist as dependencies. The requirements.txt file is a text file where you list the libraries required for your application. You install these by creating a requirements.txt file. To complete the environment setup, you’ll need to install Flask and pytube. Save this code Step 2: Install the Needed Libraries Activating a virtual environment will put the virtual environment-specific python and pip executables into your shell’s PATH. To create a virtual environment, go to your project’s directory and run venv:īefore you can start installing or using packages in your virtual environment, you’ll need to activate it. For instance, using tools such as VEED's video converter can allow for easy conversions to these formats post download. Though this tutorial focuses specifically on downloading YouTube videos in MP3 format, with some adjustments, the same process could be used to download in other formats such as AVI or WAV. In this tutorial, you will use the pytube and Flask APIs. With a virtual environment, you will have full control over the libraries used in the project. It is one of the most important tools used by Python developers. For example, the library installed as part of your operating system can allow you to create a “virtual” isolated Python installation, and you install packages into that virtual installation.īy virtue of creating a virtual environment, when you switch projects, you can simply create a new virtual environment and not have to worry about breaking the packages installed in the other environments. The virtual environment retains the libraries installed in the “system” Python by default. A virtual environment is a Python environment where the libraries and scripts installed into it are isolated from those installed in other virtual environments. When working on any Python project that involves the installation and use of third party dependency-free libraries, the first thing to do is create a virtual environment. A text editor (e.g., Visual Studio Code, Atom, etc.).Python 3 installed on your local machine.Not only does it include a command-line utility that allows you to download videos right from the terminal, but it also makes pipelining easy by allowing you to specify callback functions for different download events. At its core, pytube is a lightweight, dependency-free library written in Python. As a software developer, you may encounter a situation where you want to script something to download videos either in audio or video format. Without a doubt, YouTube is the most popular video-sharing platform in the world.
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