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In this 5-10 minute introduction to Visual Studio as a Python IDE, you create a simple Python web application based on the Flask framework. You create the project through discrete steps that help you learn about Visual Studio's basic features.
If you haven't already installed Visual Studio, go to the Visual Studio downloads page to install it for free. In the installer, make sure to select the Python development workload.
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If you haven't already installed Visual Studio, go to the Visual Studio downloads page to install it for free. In the installer, make sure to select the Python development workload.
Create the project
The following steps create an empty project that serves as a container for the application:
Question: What's the advantage of creating a project in Visual Studio for a Python application?
Answer: Python applications are typically defined using only folders and files, but this simple structure can become burdensome as applications become larger and perhaps involve auto-generated files, JavaScript for web applications, and so on. A Visual Studio project helps manage this complexity. The project (a .pyproj file) identifies all the source and content files associated with your project, contains build information for each file, maintains the information to integrate with source-control systems, and helps you organize your application into logical components.
Question: What is the 'solution' shown in Solution Explorer?
Answer: A Visual Studio solution is a container that helps you manage for one or more related projects as a group, and stores configuration settings that aren't specific to a project. Projects in a solution can also reference one another, such that running one project (a Python app) automatically builds a second project (such as a C++ extension used in the Python app).
Install the Flask library
Web apps in Python almost always use one of the many available Python libraries to handle low-level details like routing web requests and shaping responses. For this purpose, Visual Studio provides a variety of templates for web apps, one of which you use later in this Quickstart.
Here, you use the following steps to install the Flask library into the default 'global environment' that Visual Studio uses for this project.
Note
Instead of installing libraries in the global environment, developers typically create a 'virtual environment' in which to install libraries for a specific project. Visual Studio templates typically offer this option, as discussed in Quickstart - Create a Python project using a template.
Question: Where do I learn more about other available Python packages?
Answer: Visit the Python Package Index.
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You're now ready to add a bit of Python code to implement a minimal web app.
Question: Where can I learn more about Flask?
Answer: Refer to the Flask documentation, starting with the Flask Quickstart.
Run the application
Question: What's the difference between the Start Without Debugging command and Start Debugging?
Answer: You use Start Debugging to run the app in the context of the Visual Studio debugger, allowing you to set breakpoints, examine variables, and step through your code line by line. Apps may run slower in the debugger because of the various hooks that make debugging possible. Start Without Debugging, in contrast, runs the app directly as if you ran it from the command line, with no debugging context, and also automatically launches a browser and navigates to the URL specified in the project properties' Debug tab.
Next stepsMac Set Default Apps
Congratulations on running your first Python app from Visual Studio, in which you've learned a little about using Visual Studio as a Python IDE!
Because the steps you followed in this Quickstart are fairly generic, you've probably guessed that they can and should be automated. Such automation is the role of Visual Studio project templates. Go through Quickstart - Create a Python project using a template for a demonstration that creates a web app similar to the one you created in this article, but with fewer steps.
To continue with a fuller tutorial on Python in Visual Studio, including using the interactive window, debugging, data visualization, and working with Git, go through Tutorial: Get started with Python in Visual Studio.
How To Set Default App In Mac
To explore more that Visual Studio has to offer, select the links below.
Open Any Files App Mac
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