Fix to_abc() crash on parts with drum tones — v0.41.1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to PyTheory are documented here.
 
+## 0.41.1
+
+- **Fix** — `to_abc()` no longer crashes on parts containing drum tones.
+
 ## 0.41.0
 
 - **ABC notation export** — `Score.to_abc()` converts scores to ABC notation

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pytheory"
-version = "0.41.0"
+version = "0.41.1"
 description = "Music Theory for Humans"
 readme = "README.md"
 license = "MIT"

pytheory/__init__.py

@@ -1,6 +1,6 @@
 """PyTheory: Music Theory for Humans."""
 
-__version__ = "0.41.0"
+__version__ = "0.41.1"
 
 from .tones import Tone, Interval
 from .systems import System, SYSTEMS, TET

pytheory/rhythm.py

@@ -4442,6 +4442,10 @@ class Score:
         if tone is None:
             return "z"
 
+        # Skip drum tones — they don't have pitched names
+        if not hasattr(tone, "name") or not hasattr(tone, "octave"):
+            return "z"
+
         name = tone.name          # e.g. "C", "C#", "Bb"
         octave = tone.octave if tone.octave is not None else 4
 

uv.lock

@@ -690,7 +690,7 @@ wheels = [
 
 [[package]]
 name = "pytheory"
-version = "0.41.0"
+version = "0.41.1"
 source = { editable = "." }
 dependencies = [
     { name = "rich" },