需要导入的库：

pip install PyQt5

源码：

import os
from PyQt5.QtCore import Qt, QUrl
from PyQt5.QtGui import QIcon, QPixmap
from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QSlider, QListWidget, QVBoxLayout, QWidget, QPushButtonclass MusicPlayer(QMainWindow):def __init__(self):super().__init__()self.setWindowTitle("Music Player")self.setWindowIcon(QIcon("icon.png"))self.resize(800, 600)self.current_song = Noneself.playing = Falseself.song_list_view = QListWidget()self.song_list_view.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOn)self.current_song_label = QLabel()self.current_song_label.setAlignment(Qt.AlignCenter)self.current_song_label.setPixmap(QPixmap("default.jpg"))self.progress_slider = QSlider(Qt.Horizontal)self.progress_slider.setEnabled(False)self.play_button = QPushButton()self.play_button.setIcon(QIcon("play.png"))self.play_button.clicked.connect(self.play_or_pause)layout = QVBoxLayout()layout.addWidget(self.song_list_view)layout.addWidget(self.current_song_label)layout.addWidget(self.progress_slider)layout.addWidget(self.play_button)widget = QWidget()widget.setLayout(layout)self.setCentralWidget(widget)self.player = QMediaPlayer()self.player.stateChanged.connect(self.update_playback_state)self.load_song_list()def load_song_list(self):song_list = os.listdir("video")self.song_list_view.clear()self.song_list_view.addItems(song_list)self.song_list_view.itemDoubleClicked.connect(self.play_song)def play_song(self, item):song_name = item.text()if self.current_song:self.player.stop()self.current_song = Noneself.player.setMedia(QMediaContent(QUrl.fromLocalFile("video/{}".format(song_name))))self.current_song = song_nameself.player.play()self.playing = Trueself.current_song_label.setPixmap(QPixmap("video/{}.jpg".format(song_name.split(".")[0])))self.setWindowTitle("Music Player - {}".format(song_name.split(".")[0]))self.play_button.setIcon(QIcon("pause.png"))  # 更新播放按钮的图标为暂停图标def stop_song(self):self.player.stop()self.current_song = Noneself.playing = Falseself.current_song_label.setPixmap(QPixmap("default.jpg"))self.setWindowTitle("Music Player")self.play_button.setIcon(QIcon("play.png"))  # 更新播放按钮的图标为播放图标def keyPressEvent(self, event):if event.key() == Qt.Key_Space:if self.current_song:if self.playing:self.player.pause()self.playing = Falseself.play_button.setIcon(QIcon("play.png"))  # 更新播放按钮的图标为播放图标else:self.player.play()self.playing = Trueself.play_button.setIcon(QIcon("pause.png"))  # 更新播放按钮的图标为暂停图标def play_or_pause(self):if self.current_song:if self.playing:self.player.pause()self.playing = Falseself.play_button.setIcon(QIcon("play.png"))  # 更新播放按钮的图标为播放图标else:self.player.play()self.playing = Trueself.play_button.setIcon(QIcon("pause.png"))  # 更新播放按钮的图标为暂停图标def update_playback_state(self, state):if state == QMediaPlayer.PlayingState:self.playing = Trueself.setWindowTitle("Music Player - Playing")elif state == QMediaPlayer.PausedState:self.playing = Falseself.setWindowTitle("Music Player - Paused")elif state == QMediaPlayer.StoppedState:self.playing = Falseself.setWindowTitle("Music Player")def closeEvent(self, event):self.player.stop()event.accept()if __name__ == "__main__":app = QApplication([])player = MusicPlayer()player.show()app.exec()

效果：

双击列表歌曲即播放。

按住下面的暂停和播放【需要图标】【空格也可以】