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Your data changes or is updated frequently.

Your users will need to access your data in real time, such as for display on another website or as part of an application.

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Your data set is large, making download via FTP unwieldy or resource-intensive.In this tutorial, however, we’ll be using the term API to refer specifically to web APIs. Computer programs frequently need to communicate amongst themselves or with the underlying operating system, and APIs are one way they do it. In programming more generally, the term API, short for Application Programming Interface, refers to a part of a computer program designed to be used or manipulated by another program, as opposed to an interface designed to be used or manipulated by a human. For example, with Twitter’s web API, you can write a program in a language like Python or Javascript that can perform tasks such as favoriting tweets or collecting tweet metadata. A web API allows for information or functionality to be manipulated by other programs via the internet. If you’ve heard the term API before, chances are it’s been used not to refer to APIs in general, but instead to a specific kind of API, the web API. If you don’t have a preferred text editor, I recommend BBEdit for macOS or Notepad++ for Windows. Note that the instructions in that tutorial are for installing Python 2-make sure you choose Python 3 when downloading installers from the Python website, since this tutorial uses Python 3. If you’re running into trouble installing Python, you may find this Programming Historian article on installing Python helpful.

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Anaconda comes with Flask, so if you go this route you will not need to install Flask using the pip package manager. You should see some output ending in a notification that Flask has been installed successfully.Īs an alternative to the above installation instructions, you can install the Python 3 version of Anaconda, which can be downloaded here. This will install Flask using the pip package manager for Python. Once your command line is open, enter these commands: On Windows, click the Start menu icon and type cmd in the search box, then press Enter. The terminal should be the first application that appears. In macOS, click the spotlight icon on the top right corner of your desktop (the magnifying glass) and type terminal. To confirm that Python installed successfully, first open the command line. To download Python, follow this link, select the button that says Download Python 3.x.x, and then run the installer as you normally would to install applications on your operating system. You’ll also require a web browser (such as Firefox) and a text editor (such as Notepad++ or BBEdit). Installing Python and Flaskįor this tutorial, you will need Python 3 and the Flask web framework.

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If you’re new to Python, consider working through the Programming Historian series on dealing with online sources to familiarize yourself with fundamental concepts in Python programming. However, knowledge of the command line, Python, and web concepts such as HTTP may make this tutorial easier to follow. The only knowledge explicitly assumed for this lesson is the ability to use a text editor, such as BBEdit on macOS or Notepad++ on Windows. Python 3, the Flask web framework, and a web browser are required for this tutorial, and installation instructions for all platforms are outlined below. You can use the Windows, macOS, or Linux operating systems to complete this tutorial, and those few instructions that are not the same across platforms will be explicitly noted.

Learn some principles of good API design, applying them to an API that draws book metadata from a database.

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Learn how to build a web API that returns data to its users.

Learn what an API is and when you should use one.

Web APIs are tools for making information and application functionality accessible over the internet. An API Case Study: Sensationalism and Historical Fires.

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