Ensure tts CLI tool readme and usage help is in sync

scripts/sync_readme.py

@@ -0,0 +1,32 @@
+import argparse
+from pathlib import Path
+
+
+def replace_between_markers(content, marker: str, replacement: str) -> str:
+    start_marker = f"<!-- begin-{marker} -->\n\n"
+    end_marker = f"\n\n<!-- end-{marker} -->\n"
+    start_index = content.index(start_marker) + len(start_marker)
+    end_index = content.index(end_marker)
+    content = content[:start_index] + replacement + content[end_index:]
+    return content
+
+
+def sync_readme():
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--check", action="store_true", default=False)
+    args = ap.parse_args()
+    readme_path = Path(__file__).parent.parent / "README.md"
+    orig_content = readme_path.read_text()
+    from TTS.bin.synthesize import description
+
+    new_content = replace_between_markers(orig_content, "tts-readme", description.strip())
+    if args.check:
+        if orig_content != new_content:
+            print("README.md is out of sync; please edit TTS/bin/TTS_README.md and run scripts/sync_readme.py")
+            exit(42)
+    readme_path.write_text(new_content)
+    print("Updated README.md")
+
+
+if __name__ == "__main__":
+    sync_readme()