READMEs, templates, typos CI

.github/ISSUE_TEMPLATE/example_request.yaml

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+# yaml-language-server: $schema=https://raw.githubusercontent.com/SchemaStore/schemastore/refs/heads/master/src/schemas/json/github-issue-forms.json
+name: '🚀 Course or notebook proposal'
+description: Request a course or notebook
+type: Example
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Let us know what you'd like to see added!
+  - type: textarea
+    id: example-description
+    attributes:
+      label: Description
+      description: 'Description of the notebook or course to add. Please make the reason and usecases as detailed as possible. If you intend to submit a PR for this issue, tell us in the description. Thanks!'
+      placeholder: I would like a notebook or course on ...
+    validations:
+      required: true

.github/PULL_REQUEST_TEMPLATE.md

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+## 📝 Summary
+
+<!--
+Provide a concise summary of what this pull request is addressing.
+
+Link to the issue in which this notebook or course was proposed.
+-->
+
+## 📋 Checklist
+
+- [ ] I have included package dependencies in the notebook file [using `--sandbox`](https://docs.marimo.io/guides/package_reproducibility/)
+- [ ] If adding a course, include a `README.md`
+- [ ] Keep language direct and simple.

.github/workflows/typos.yaml

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+name: Typos
+
+# Run on pull requests
+on:
+  pull_request: {}
+
+jobs:
+  typos:
+    name: Check for typos
+    runs-on: ubuntu-latest
+    steps:
+      - name: 🛑 Cancel Previous Runs
+        uses: styfle/[email protected]
+      - uses: actions/checkout@v4
+      - uses: crate-ci/[email protected]
+name: Tests

python/README.md

@@ -1,2 +1,19 @@
-> [!NOTE]
-> marimo notebook containing mermaid diagram showing learn-flow for Python: https://marimo.app/l/ro1sn5
+# Learn Python
+
+This collection of marimo notebooks is designed to teach you the basics
+of the Python programming language.
+
+**Running notebooks.** To run a notebook locally, use
+
+```bash
+uvx marimo edit <URL>
+```
+
+For example, run the numbers tutorial with
+
+```bash
+uvx marimo edit https://github.com/marimo-team/learn/blob/main/python/001_numbers.py
+```
+
+You can also open notebooks in our online playground by appending `marimo.app/`
+to a notebook's URL: [marimo.app/https://github.com/marimo-team/learn/blob/main/python/001_numbers.py](https://github.com/marimo-team/learn/blob/main/python/001_numbers.py).