Description

The evaluation used in line 154 of parser/rst.py of MoinMoin 1.5.0 compares a tuple against a list:

        required_version = (0, 3, 10)
        current_version = [int(i) for i in docutils.__version__.split('.')]
        if current_version < required_version:

This comparison is meaningless in Python, but unfortunately it does not (yet, see Comparing heterogeneous types) raise an exception, and always results in a false value, rendering Docutils support unusable.

Steps to reproduce

1. Make sure you have Docutils > 0.3.10 (e.g. 0.4) globally available in your system.

2. Start creating a new page, write #format rst on the top and add some text.

3. Click on the preview button.

The following RuntimeError is shown:

ERROR: The installed docutils version is 0.4; version 0.3.10 or later is required.

Details

Workaround

The appropriate way to fix this is converting the list current_version into a tuple, so that the comparison makes sense:

        required_version = (0, 3, 10)
        current_version = tuple([int(i) for i in docutils.__version__.split('.')])
        if current_version < required_version:

Discussion

Some comparisons between disparate Python objects return meaningless results. Have a look at Comparing heterogeneous types and PEP 3000 (under “Core language”).

Plan

• Priority:
• Assigned to:

• Status: Thanks for the bug report, but please check MoinMoinBugs next time before filing one. This is a duplicate of a few other bug reports.

CategoryMoinMoinNoBug