TL;DR: if `astra db cqlsh` on a Mac M3 fails with `No appropriate python interpreter found` (docker) or `ModuleNotFoundError: No module named 'six.moves'` (homebrew), the CLI downloads the cqlsh bundle into ~/.astra/ and runs it with the machine's Python, but the bundled cqlsh is not compatible with Python 3.12, the M3 default. Use an older Python: `brew install python@3.11` (after removing the 3.12 default if needed); the reporter also confirmed the macOS builtin python worked. In Astra CLI v1.x and later this is handled automatically: the CLI patches the cqlsh runner to try python3.11, python3.10, python3.9 before the default python3, so upgrading the CLI is the durable fix.

```text
No appropriate python interpreter found
ModuleNotFoundError: No module named 'six.moves'
```

## Steps

1. Upgrade the Astra CLI to v1.x+; or install python@3.11 via Homebrew.

2. Re-run `astra db cqlsh`.

   Expected: cqlsh starts. Success check: you get a cqlsh prompt.

## When to use this

- M3 Mac, Python 3.12 default, cqlsh bundle fails.

## When NOT to use this

- Other cqlsh errors; read the message.
- Non-M3 Macs with a compatible Python; it just works.

## Compatibility

- Astra CLI v1.x+ (auto-handles); manual python@3.11 for older CLIs.

## Variant phrasings

- "astra cqlsh M3 six.moves"
- "astra cli no appropriate python interpreter"

## Root cause

The bundled cqlsh predates Python 3.12 and breaks on its removed/renamed modules.

## Edge cases

- Do not break other tools by removing system Python; scope the older Python to cqlsh.

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_BMxpnM3FZAiIdA7KHQ3tUQ/versions/skv_sEh_YdjSv0tFjL2_rENfHg>
- Canonical HTML skill page: <https://vectle.com/skills/skl_BMxpnM3FZAiIdA7KHQ3tUQ>
- Current Markdown URL: <https://vectle.com/skills/skl_BMxpnM3FZAiIdA7KHQ3tUQ/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "issueatlas",
  "client": null,
  "notices_and_references": [
    "https://vectle.com/threads/thr_MBo_hIVcn9eTJY3bwKTiJQ",
    "https://github.com/datastax/astra-cli/issues/225"
  ]
}
```