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Creating an HTML Table from a Python Dictionary in Flask with Jinja2

Learn how to create a well-structured `HTML` table using `Flask` and the `Jinja2` templating engine from a Python dictionary. This guide breaks down the necessary steps to display your data in a clear, organized manner. --- This video is based on the question https://stackoverflow.com/q/65363168/ asked by the user 'Est_rezz' ( https://stackoverflow.com/u/14852409/ ) and on the answer https://stackoverflow.com/a/65363356/ provided by the user 'IoaTzimas' ( https://stackoverflow.com/u/8228558/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: FLASK: Creating table in JINJA from python dict Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Building an HTML Table from a Python Dictionary in Flask When working with web applications in Python's Flask framework, you may find yourself needing to display data in a structured format, such as an HTML table. If you're trying to render a table from a dictionary using Jinja2, you might encounter some challenges along the way. In this guide, we'll address how to properly create an HTML table from a Python dictionary and troubleshoot common issues. The Problem You want to create a table in HTML from the following dictionary structure: [[See Video to Reveal this Text or Code Snippet]] Your goal is to display it as follows: [[See Video to Reveal this Text or Code Snippet]] However, your initial attempt did not yield the desired results. Let's explore how to effectively manage this process with Jinja2. The Solution Correcting Your Jinja2 Code Your initial Jinja2 loop was not structured quite right for your data. Below is the recommended approach to display your dictionary as an HTML table. Step 1: Set Up Your Code Use this code snippet as your base for building the table: [[See Video to Reveal this Text or Code Snippet]] A More Concise Approach Alternatively, you can use a more concise method that takes advantage of Jinja's capabilities. Here’s how you can simplify your code: [[See Video to Reveal this Text or Code Snippet]] Explanation of Code Structure Looping through the Dictionary: Use .keys() or .items() to iterate through the keys and values of your dictionary. Creating Table Rows and Cells: For each key (attribute), you will create a new row (<tr>). Inside each row, loop through the corresponding list (values) to create cells (<td>). Important Note on Jinja2 Jinja2 can sometimes behave unexpectedly when looping through dictionaries. Make sure to properly reference your dictionary items to avoid issues! Conclusion Now you have the tools and knowledge to create an HTML table from a Python dictionary in your Flask application using Jinja2. By following these better practices and understanding how to structure your loops, you'll be able to display your data more effectively. If you have any further questions or run into issues, don't hesitate to reach out in the comments below! Happy coding!