✨ Add option to set the width of the Rich exception output #528

indiVar0508 · 2023-01-07T19:57:15Z

add parameter as suggested feature in issue #523

indiVar0508 · 2023-09-18T15:44:48Z

Hi @tiangolo ,
Did you get a chance to review this PR

Napo2k · 2024-02-12T08:14:53Z

I definitely would like for this to be merged in! @tiangolo

nikita-b · 2024-03-14T18:23:03Z

Yes, feature looks really good. @tiangolo Could you please, review?

adding new attribute in DeveloperExceptionConfig to allow setting width for rick traceback.

add `pretty_exceptions_width` in typer class to be used by `DeveloperConfigException` to allow setting width of traceback boxes.

…ix_523

typer/main.py

github-actions · 2025-09-15T14:48:21Z

📝 Docs preview for commit d651993 at: https://ad526c53.typertiangolo.pages.dev

Modified Pages

https://ad526c53.typertiangolo.pages.dev/tutorial/exceptions/ - (before)

YuriiMotov · 2025-09-19T10:43:09Z

Is the intention of this PR to handle situations when it's impossible to determine the width of the terminal screen?

Currently you can specify the width of the terminal screen using TERMINAL_WIDTH ENV variable.

typer/typer/rich_utils.py

Lines 74 to 75 in 0bc7cce

    
           _TERMINAL_WIDTH = getenv("TERMINAL_WIDTH") 
        
           MAX_WIDTH = int(_TERMINAL_WIDTH) if _TERMINAL_WIDTH else None

See in the details

TERMINAL_WIDTH=70 python main.py
╭──────────────── Traceback (most recent call last) ─────────────────╮
│ /home/yurii/code/typer/motov/helloworld/main.py:33 in main         │
│                                                                    │
│   30 │   │   │   }                                                 │
│   31 │   │   }                                                     │
│   32 │   }                                                         │
│ ❱ 33 │   print(name + 3)                                           │
│   34                                                               │
│   35                                                               │
│   36 if __name__ == "__main__":                                    │
│                                                                    │
│ ╭──────────────────────────── locals ────────────────────────────╮ │
│ │ deep_dict_or_json = {                                          │ │
│ │                     │   'this_is_a_long_key': {                │ │
│ │                     │   │   'this_is_the_next_long_key': {     │ │
│ │                     │   │   │   'this_is_the_next_long_key': { │ │
│ │                     │   │   │   │                              │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │                          │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │                      │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │   │                  │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │   │   │              │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │   │   │   │          │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │   │   │   │   │      │ │
│ │                     'this_is_the_next_long_key': {             │ │
│ │                     │   │   │   │   │   │   │   │   │   │   │  │ │
│ │                     'and_once_again_a_very_long_key': {        │ │
│ │                     │   │   │   │   │   │   │   │   │   │   │  │ │
│ │                     │   'but_this_is_not_the_end': {           │ │
│ │                     │   │   │   │   │   │   │   │   │   │   │  │ │
│ │                     │   │   'end': True                        │ │
│ │                     │   │   │   │   │   │   │   │   │   │   │  │ │
│ │                     │   }                                      │ │
│ │                     │   │   │   │   │   │   │   │   │   │   │  │ │
│ │                     }                                          │ │
│ │                     │   │   │   │   │   │   │   │   │   │   }  │ │
│ │                     │   │   │   │   │   │   │   │   │   }      │ │
│ │                     │   │   │   │   │   │   │   │   }          │ │
│ │                     │   │   │   │   │   │   │   }              │ │
│ │                     │   │   │   │   │   │   }                  │ │
│ │                     │   │   │   │   │   }                      │ │
│ │                     │   │   │   │   }                          │ │
│ │                     │   │   │   }                              │ │
│ │                     │   │   }                                  │ │
│ │                     │   }                                      │ │
│ │                     }                                          │ │
│ │              name = 'morty'                                    │ │
│ ╰────────────────────────────────────────────────────────────────╯ │
╰────────────────────────────────────────────────────────────────────╯
TypeError: can only concatenate str (not "int") to str

I think we don't need to change anything. Probably just document this ENV variable

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indiVar0508 force-pushed the fix_523 branch from 0e54ace to 7814341 Compare March 4, 2023 14:00

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indiVar0508 force-pushed the fix_523 branch from 78eb706 to 2587d6d Compare September 18, 2023 15:35

indiVar0508 force-pushed the fix_523 branch from 2587d6d to 8c7138a Compare February 12, 2024 12:22

svlandeg added feature New feature, enhancement or request p3 labels Mar 1, 2024

indiVar0508 force-pushed the fix_523 branch from 8c7138a to 8160ea7 Compare March 15, 2024 05:25

indiVar0508 force-pushed the fix_523 branch from 27cf371 to 77b2339 Compare March 24, 2024 07:09

indiVar0508 added 2 commits March 29, 2024 17:10

add pretty_exceptions_width to DeveloperExceptionConfig

637a6a1

adding new attribute in DeveloperExceptionConfig to allow setting width for rick traceback.

add pretty_exceptions_width in Typer class

f4b44a4

add `pretty_exceptions_width` in typer class to be used by `DeveloperConfigException` to allow setting width of traceback boxes.

indiVar0508 force-pushed the fix_523 branch from 77b2339 to f4b44a4 Compare March 29, 2024 11:40

svlandeg changed the title ~~Add #523~~ ✨ Add a new parameter to set the width of the Rich exception output Apr 18, 2024

svlandeg and others added 2 commits April 18, 2024 11:01

add tutorial 005 to showcase pretty_exceptions_width

0d209d8

🎨 [pre-commit.ci] Auto format from pre-commit.com hooks

0460e47

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svlandeg added 3 commits April 18, 2024 11:07

add comment about default value

3e81d23

Merge branch 'fix_523' of https://github.com/indiVar0508/typer into f…

0c82ef0

…ix_523

Merge branch 'master' into fix_523

6d87cfd

svlandeg changed the title ~~✨ Add a new parameter to set the width of the Rich exception output~~ ✨ Add option to set the width of the Rich exception output Apr 18, 2024

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avoid F841 error

cb05984

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add test case for new tutorial file

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svlandeg marked this pull request as ready for review August 27, 2024 13:00

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svlandeg marked this pull request as draft August 28, 2025 10:04

Merge branch 'master' into fix_523

e9431c3

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update docs format

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svlandeg marked this pull request as ready for review August 28, 2025 14:48

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avoid importing rich_utils too early

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Merge branch 'master' into fix_523

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svlandeg added 2 commits September 15, 2025 16:46

Merge branch 'master' into fix_523

b6e569d

fix

d651993

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✨ Add option to set the width of the Rich exception output #528

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indiVar0508 commented Jan 7, 2023

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github-actions bot commented Sep 15, 2025

Modified Pages

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YuriiMotov commented Sep 19, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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YuriiMotov commented Sep 19, 2025 •

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