Comments (6)
Oh, and I will add that I also downgraded numpy to version numpy=1.23.5
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I will also add, that the same version of Brightway2 (Brightway2 = 2.4.2, and downgraded numpy = 1.23.5) works on a linux server. So the problem seems to be on mine (and colleagues) windows computers.
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I hit the same problem on a windows machine and worked around it using Docker Desktop and one of Anaconda's Docker images: https://docs.anaconda.com/free/anaconda/applications/docker/
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Any news / workaround on this issue ?
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I have the same issue on a linux machine. Neither downgrading numpy=1.23.5 nor downgrading to brightway2=2.4.2 solved it. Any news?
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This error comes from mixing Brightway 2 and 2.5. Due to restrictions on the lengths of file paths on Windows, 2.5 introduced a shorter way of creating filenames, including project directory names. To maintain backwards compatibility, I needed to support the older project filenames, so added the column full_hash
to the database that stores project names, which marks whether the project directory uses the older, longer full_hash
, or the new, shorter value. For example, the default project directory can be one of the following:
default.c21f969b
default.c21f969b5f03d33d43e04f8f136e7682
This was a stupid design decision, and is fixed in https://github.com/brightway-lca/bw_projects
(not yet integrated in Brightway), which just stores the project directory path directly.
The best way to fix this error would be to modify the SQLite schema to make the full_hash
optional (all null), or to set a default value of true
. However, the ALTER TABLE command in SQLite is limited - we can't just change an existing table, we would need to create a new virtual table with the correct schema, copy the data there, and then use the virtual table to replace the existing one.
Alternatively, you can:
- Use a different project data directory with the environment variable
BRIGHTWAY2_DIR
. - Delete
projects.db
. You will need to recreate your projects withset_project
, but you won't lose any data. I would recommend renaming it to something likeprojects.db.backup
before deleting it :) - Only use Brightway 2.5.
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