Improver performance loading playlists

app/models.py

@@ -22,7 +22,7 @@ from sqlalchemy import (
 )
 from sqlalchemy.exc import IntegrityError, ProgrammingError
 from sqlalchemy.orm.exc import NoResultFound
-from sqlalchemy.orm import joinedload
+from sqlalchemy.orm import joinedload, selectinload
 from sqlalchemy.orm.session import Session
 from sqlalchemy.engine.row import RowMapping
 
@@ -48,6 +48,7 @@ cache_region = make_region().configure(
     expiration_time=600  # Cache expires after 10 minutes
 )
 
+
 def run_sql(session: Session, sql: str) -> Sequence[RowMapping]:
     """
     Run a sql string and return results
@@ -519,9 +520,13 @@ class PlaylistRows(dbtables.PlaylistRowsTable):
         For passed playlist, return a list of rows.
         """
 
-        plrs = session.scalars(
+        stmt = (
-            select(cls).where(cls.playlist_id == playlist_id).order_by(cls.row_number)
+            select(cls)
-        ).all()
+            .where(cls.playlist_id == playlist_id)
+            .options(selectinload(cls.track))
+            .order_by(cls.row_number)
+        )
+        plrs = session.execute(stmt).scalars().all()
 
         return plrs
 

app/music_manager.py

@@ -6,6 +6,7 @@ from time import sleep
 from typing import Optional
 
 # Third party imports
+# import line_profiler
 import numpy as np
 import pyqtgraph as pg  # type: ignore
 from sqlalchemy.orm.session import Session

app/musicmuster.py

@@ -57,6 +57,7 @@ from PyQt6.QtWidgets import (
 )
 
 # Third party imports
+# import line_profiler
 from pygame import mixer
 from sqlalchemy.orm.session import Session
 import stackprinter  # type: ignore

app/playlistmodel.py

@@ -24,6 +24,7 @@ from PyQt6.QtGui import (
 )
 
 # Third party imports
+# import line_profiler
 from sqlalchemy.orm.session import Session
 import obswebsocket  # type: ignore
 

app/playlists.py

@@ -31,6 +31,7 @@ from PyQt6.QtWidgets import (
 )
 
 # Third party imports
+# import line_profiler
 
 # App imports
 from audacity_controller import AudacityController

pyproject.toml

@@ -32,6 +32,7 @@ dependencies = [
     "audioop-lts>=0.2.1",
     "types-pyyaml>=6.0.12.20241230",
     "dogpile-cache>=1.3.4",
+    "pdbpp>=0.10.3",
 ]
 
 [dependency-groups]

uv.lock

@@ -37,6 +37,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/25/8a/c46dcc25341b5bce5472c718902eb3d38600a903b14fa6aeecef3f21a46f/asttokens-3.0.0-py3-none-any.whl", hash = "sha256:e3078351a059199dd5138cb1c706e6430c05eff2ff136af5eb4790f9d28932e2", size = 26918 },
 ]
 
+[[package]]
+name = "attrs"
+version = "25.1.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/49/7c/fdf464bcc51d23881d110abd74b512a42b3d5d376a55a831b44c603ae17f/attrs-25.1.0.tar.gz", hash = "sha256:1c97078a80c814273a76b2a298a932eb681c87415c11dee0a6921de7f1b02c3e", size = 810562 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/fc/30/d4986a882011f9df997a55e6becd864812ccfcd821d64aac8570ee39f719/attrs-25.1.0-py3-none-any.whl", hash = "sha256:c75a69e28a550a7e93789579c22aa26b0f5b83b75dc4e08fe092980051e1090a", size = 63152 },
+]
+
 [[package]]
 name = "audioop-lts"
 version = "0.2.1"
@@ -199,6 +208,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/7b/8f/c4d9bafc34ad7ad5d8dc16dd1347ee0e507a52c3adb6bfa8887e1c6a26ba/executing-2.2.0-py2.py3-none-any.whl", hash = "sha256:11387150cad388d62750327a53d3339fad4888b39a6fe233c3afbb54ecffd3aa", size = 26702 },
 ]
 
+[[package]]
+name = "fancycompleter"
+version = "0.9.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pyreadline", marker = "sys_platform == 'win32'" },
+    { name = "pyrepl" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/a9/95/649d135442d8ecf8af5c7e235550c628056423c96c4bc6787348bdae9248/fancycompleter-0.9.1.tar.gz", hash = "sha256:09e0feb8ae242abdfd7ef2ba55069a46f011814a80fe5476be48f51b00247272", size = 10866 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/38/ef/c08926112034d017633f693d3afc8343393a035134a29dfc12dcd71b0375/fancycompleter-0.9.1-py3-none-any.whl", hash = "sha256:dd076bca7d9d524cc7f25ec8f35ef95388ffef9ef46def4d3d25e9b044ad7080", size = 9681 },
+]
+
 [[package]]
 name = "flake8"
 version = "7.1.2"
@@ -467,6 +489,7 @@ dependencies = [
     { name = "mutagen" },
     { name = "mysqlclient" },
     { name = "obs-websocket-py" },
+    { name = "pdbpp" },
     { name = "psutil" },
     { name = "pydub" },
     { name = "pydymenu" },
@@ -511,6 +534,7 @@ requires-dist = [
     { name = "mutagen", specifier = ">=1.47.0" },
     { name = "mysqlclient", specifier = ">=2.2.5" },
     { name = "obs-websocket-py", specifier = ">=1.0" },
+    { name = "pdbpp", specifier = ">=0.10.3" },
     { name = "psutil", specifier = ">=6.1.0" },
     { name = "pydub", specifier = ">=0.25.1" },
     { name = "pydymenu", specifier = ">=0.5.2" },
@@ -668,6 +692,20 @@ wheels = [
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 ]
 
+[[package]]
+name = "pdbpp"
+version = "0.10.3"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "fancycompleter" },
+    { name = "pygments" },
+    { name = "wmctrl" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/1f/a3/c4bd048256fd4b7d28767ca669c505e156f24d16355505c62e6fce3314df/pdbpp-0.10.3.tar.gz", hash = "sha256:d9e43f4fda388eeb365f2887f4e7b66ac09dce9b6236b76f63616530e2f669f5", size = 68116 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/93/ee/491e63a57fffa78b9de1c337b06c97d0cd0753e88c00571c7b011680332a/pdbpp-0.10.3-py2.py3-none-any.whl", hash = "sha256:79580568e33eb3d6f6b462b1187f53e10cd8e4538f7d31495c9181e2cf9665d1", size = 23961 },
+]
+
 [[package]]
 name = "pexpect"
 version = "4.9.0"
@@ -928,6 +966,18 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/7b/34/5702b3b7cafe99be1d94b42f100e8cc5e6957b761fcb1cf5f72d492851da/pyqtgraph-0.13.7-py3-none-any.whl", hash = "sha256:7754edbefb6c367fa0dfb176e2d0610da3ada20aa7a5318516c74af5fb72bf7a", size = 1925473 },
 ]
 
+[[package]]
+name = "pyreadline"
+version = "2.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/bc/7c/d724ef1ec3ab2125f38a1d53285745445ec4a8f19b9bb0761b4064316679/pyreadline-2.1.zip", hash = "sha256:4530592fc2e85b25b1a9f79664433da09237c1a270e4d78ea5aa3a2c7229e2d1", size = 109189 }
+
+[[package]]
+name = "pyrepl"
+version = "0.9.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/05/1b/ea40363be0056080454cdbabe880773c3c5bd66d7b13f0c8b8b8c8da1e0c/pyrepl-0.9.0.tar.gz", hash = "sha256:292570f34b5502e871bbb966d639474f2b57fbfcd3373c2d6a2f3d56e681a775", size = 48744 }
+
 [[package]]
 name = "pytest"
 version = "8.3.5"
@@ -1231,3 +1281,15 @@ sdist = { url = "https://files.pythonhosted.org/packages/e6/30/fba0d96b4b5fbf594
 wheels = [
     { url = "https://files.pythonhosted.org/packages/5a/84/44687a29792a70e111c5c477230a72c4b957d88d16141199bf9acb7537a3/websocket_client-1.8.0-py3-none-any.whl", hash = "sha256:17b44cc997f5c498e809b22cdf2d9c7a9e71c02c8cc2b6c56e7c2d1239bfa526", size = 58826 },
 ]
+
+[[package]]
+name = "wmctrl"
+version = "0.5"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "attrs" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/60/d9/6625ead93412c5ce86db1f8b4f2a70b8043e0a7c1d30099ba3c6a81641ff/wmctrl-0.5.tar.gz", hash = "sha256:7839a36b6fe9e2d6fd22304e5dc372dbced2116ba41283ea938b2da57f53e962", size = 5202 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/13/ca/723e3f8185738d7947f14ee7dc663b59415c6dee43bd71575f8c7f5cd6be/wmctrl-0.5-py2.py3-none-any.whl", hash = "sha256:ae695c1863a314c899e7cf113f07c0da02a394b968c4772e1936219d9234ddd7", size = 4268 },
+]