refactor: implement lazy loading for module imports in whisperx

whisperx/__init__.py

@@ -1,7 +1,40 @@
-from whisperx.alignment import load_align_model as load_align_model, align as align
-from whisperx.asr import load_model as load_model
-from whisperx.audio import load_audio as load_audio
-from whisperx.diarize import (
-    assign_word_speakers as assign_word_speakers,
-    DiarizationPipeline as DiarizationPipeline,
-)
+import importlib
+
+
+def _lazy_import(name):
+    module = importlib.import_module(f"whisperx.{name}")
+    return module
+
+
+def load_align_model(*args, **kwargs):
+    alignment = _lazy_import("alignment")
+    return alignment.load_align_model(*args, **kwargs)
+
+
+def align(*args, **kwargs):
+    alignment = _lazy_import("alignment")
+    return alignment.align(*args, **kwargs)
+
+
+def load_model(*args, **kwargs):
+    asr = _lazy_import("asr")
+    return asr.load_model(*args, **kwargs)
+
+
+def load_audio(*args, **kwargs):
+    audio = _lazy_import("audio")
+    return audio.load_audio(*args, **kwargs)
+
+
+def assign_word_speakers(*args, **kwargs):
+    diarize = _lazy_import("diarize")
+    return diarize.assign_word_speakers(*args, **kwargs)
+
+
+class DiarizationPipeline:
+    def __init__(self, *args, **kwargs):
+        diarize = _lazy_import("diarize")
+        self._pipeline = diarize.DiarizationPipeline(*args, **kwargs)
+
+    def __getattr__(self, name):
+        return getattr(self._pipeline, name)