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README - code example to use Python syntax highlighting (#92894)

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Added explicit code block  for Python syntax highlighting.

Reviewed-on: https://projects.blender.org/blender/blender-asset-tracer/pulls/92894
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Andrej730 2025-07-28 15:01:00 +02:00 committed by Sybren A. Stüvel
parent 08b37a35f8
commit 899f361fcf
1 changed files with 37 additions and 35 deletions
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README.md
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@ -75,49 +75,51 @@ Mypy likes to see the return type of `__init__` methods explicitly declared as `
BAT can be used as a Python library to inspect the contents of blend files, without having to
open Blender itself. Here is an example showing how to determine the render engine used:
#!/usr/bin/env python3.7
import json
import sys
from pathlib import Path
```python
#!/usr/bin/env python3.7
import json
import sys
from pathlib import Path
from blender_asset_tracer import blendfile
from blender_asset_tracer.blendfile import iterators
from blender_asset_tracer import blendfile
from blender_asset_tracer.blendfile import iterators
if len(sys.argv) != 2:
if len(sys.argv) != 2:
print(f'Usage: {sys.argv[0]} somefile.blend', file=sys.stderr)
sys.exit(1)
bf_path = Path(sys.argv[1])
bf = blendfile.open_cached(bf_path)
bf_path = Path(sys.argv[1])
bf = blendfile.open_cached(bf_path)
# Get the first window manager (there is probably exactly one).
window_managers = bf.find_blocks_from_code(b'WM')
assert window_managers, 'The Blend file has no window manager'
window_manager = window_managers[0]
# Get the first window manager (there is probably exactly one).
window_managers = bf.find_blocks_from_code(b'WM')
assert window_managers, 'The Blend file has no window manager'
window_manager = window_managers[0]
# Get the scene from the first window.
windows = window_manager.get_pointer((b'windows', b'first'))
for window in iterators.listbase(windows):
# Get the scene from the first window.
windows = window_manager.get_pointer((b'windows', b'first'))
for window in iterators.listbase(windows):
scene = window.get_pointer(b'scene')
break
# BAT can only return simple values, so it can't return the embedded
# struct 'r'. 'r.engine' is a simple string, though.
engine = scene[b'r', b'engine'].decode('utf8')
xsch = scene[b'r', b'xsch']
ysch = scene[b'r', b'ysch']
size = scene[b'r', b'size'] / 100.0
# BAT can only return simple values, so it can't return the embedded
# struct 'r'. 'r.engine' is a simple string, though.
engine = scene[b'r', b'engine'].decode('utf8')
xsch = scene[b'r', b'xsch']
ysch = scene[b'r', b'ysch']
size = scene[b'r', b'size'] / 100.0
render_info = {
render_info = {
'engine': engine,
'frame_pixels': {
'x': int(xsch * size),
'y': int(ysch * size),
},
}
}
json.dump(render_info, sys.stdout, indent=4, sort_keys=True)
print()
json.dump(render_info, sys.stdout, indent=4, sort_keys=True)
print()
```
To understand the naming of the properties, look at Blender's `DNA_xxxx.h` files with struct
definitions. It is those names that are accessed via `blender_asset_tracer.blendfile`. The