Use splitext to allow arbitrarw extensions

patacrep/songbook/__init__.py

@@ -38,7 +38,7 @@ def open_songbook(filename):
     songbook = _add_songbook_defaults(user_songbook)
 
     songbook['_filepath'] = filename
-    songbook['_basename'] = os.path.basename(filename)[:-len(".yaml")]
+    songbook['_basename'] = os.path.splitext(os.path.basename(filename))[0]
 
     # Gathering datadirs
     songbook['_datadir'] = list(_iter_absolute_datadirs(songbook))

test/test_songbook/test_compilation.py

@@ -36,7 +36,7 @@ class FileTest(unittest.TestCase, metaclass=dynamic.DynamicTest):
                 os.path.dirname(__file__),
                 '*.yaml',
             ))):
-            base = songbook[:-len(".yaml")]
+            base = os.path.splitext(songbook)[0]
             yield (
                 "test_latex_generation_{}".format(os.path.basename(base)),
                 cls._create_generation_test(base),