probcomp/bayeslite

Add open modes to bayeslite_open

Open

#238 opened on Oct 7, 2015

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 (4 comments) (0 reactions) (0 assignees)Python (915 stars) (63 forks)batch import
help wantedk min/hr

Description

By analogy with standard file open modes. Useful modes include

  • read-only (get a database that exists, but don't save changes back)
  • force the database being opened actually exists (crash if absent)
  • force the database being opened is fresh (crash if exists)
  • overwrite the database being opened with a fresh one (truncate on open if exists)

Contributor guide

Tech stack
pythonsqlite
Domain
database
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Python basicsbayeslite internals
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Examine the current implementation of bayeslite open in the repository (likely in a file like bayeslite.py). Understand how it currently opens a database and what parameters it accepts. Then implement the four requested open modes: read only, crash if absent, crash if exists, and overwrite (truncate). Ensure that the new modes are integrated cleanly into the existing function signature and that error handling is appropriate for invalid parameters. Check the issue comments for any additional context or suggestions from maintainers.