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Rich

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Rich is a Python library for rich text and beautiful formatting in the terminal.

Latest: v14.3.37 releases2 breaking changes4 common errorsView on GitHub

Release History

Common Errors

UnicodeEncodeError3 reports

UnicodeEncodeError in rich arises when it attempts to print Unicode characters to a terminal or file that doesn't support them, often due to an incorrect encoding setting. To fix this, explicitly set the environment's encoding to UTF-8 before running your script, such as through `chcp 65001` in Windows before running the Python command, or by setting the PYTHONIOENCODING environment variable to utf-8. Ensure your output stream (terminal or file) also supports UTF-8.

RecursionError1 report

RecursionError in rich typically occurs when rendering deeply nested data structures or tracebacks, leading to excessive recursion exceeding Python's limit. To fix it, increase `recursion_limit` via `sys.setrecursionlimit` before rendering the data, or more effectively, simplify the data structure or traceback rendering to reduce nesting depth, for example, by limiting the depth of displayed data.

NotImplementedError1 report

A NotImplementedError in rich usually means a required method or functionality is missing in a class, often in a custom class that inherits from a rich class. To fix this, identify the missing method (indicated in the traceback) and implement it in your derived class, ensuring it provides the expected behavior for rich's functionalities like rendering or displaying objects. Also,check that rich's required dependencies are correctly installed, as missing modules can sometimes indirectly trigger this error.

RefereenceError1 report

ReferenceError in rich often arises when attempting to render objects that rely on weak references (e.g., proxies to objects that have already been garbage collected). To fix it, ensure the objects you're printing with `console.print` or similar rich functions are still valid and haven't been garbage collected; consider holding a strong reference to prevent premature disposal, convert proxies to their referenced objects if possible, or handle `ReferenceError` exceptions gracefully.

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