fix(ux): improve command not found errors

[abn]

fix(ux): improve namespace command not found error

Resolves: #10123

fix(ux): improve command not found error

Summary by Sourcery

Bug Fixes:

• Fix: Command not found error within a namespace now provides helpful suggestions and documentation links.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request improves the error message when a user attempts to use a command that does not exist within a namespace. Instead of a generic command not found error, the user will now see a more specific error message that indicates the command does not exist in the given namespace, along with a list of suggested commands and a link to the documentation.

Sequence diagram for improved namespace command error handling

sequenceDiagram
    actor User
    participant App as Poetry Application
    participant IO as IO Interface

    User->>App: Execute command
    App->>App: Check command exists
    alt Command not found but namespace exists
        App->>App: Get sub-commands in namespace
        App->>App: Find similar command names
        App->>IO: Write error with suggestions
        App->>IO: Write documentation link
        IO-->>User: Display error message
    else Other error
        App->>App: Raise original error
    end

Loading

File-Level Changes

Change	Details	Files
Improve error message for commands not found within a namespace.	Added a check to see if the command is a namespace. If the command is a namespace, generate a list of subcommands. Suggest similar commands to the user. Output a more specific error message to the user. Include a link to the documentation for the namespace.	src/poetry/console/application.py
Add tests for the new error message.	Added a new test case to verify the new error message. Added a parameterization to test multiple namespaces.	tests/console/test_application_removed_commands.py

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!
• Generate a plan of action for an issue: Comment @sourcery-ai plan on
  an issue to generate a plan of action for it.

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey @abn - I've reviewed your changes - here's some feedback:

Overall Comments:

• There's a grammatical error in the error message: "does not exists" should be "does not exist"

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟡 Testing: 1 issue found
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}