按照自己思路简单写了个桌面播放器，只有自己喜欢的歌。使用QtDesigner设计的ui界面，功能简单，还有很多bug@~@，代码奉上：

　　

　　music_button.ui使用扩展工具pyuic5生成了music_button.py文件，内容如下：

# -*- coding: utf-8 -*-

Form implementation generated from reading ui file 'music_button.ui'

Created by: PyQt5 UI code generator 5.11.3

WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(265, 65)
MainWindow.setMinimumSize(QtCore.QSize(265, 65))
MainWindow.setMaximumSize(QtCore.QSize(265, 169))
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(60, 10, 24, 24))
self.pushButton.setAutoFillBackground(False)
self.pushButton.setStyleSheet("border-image: url(:/qrc_files/up.png);")
self.pushButton.setText("")
self.pushButton.setAutoDefault(False)
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(110, 10, 24, 24))
self.pushButton_2.setStyleSheet("border-image: url(:/qrc_files/play.png);")
self.pushButton_2.setText("")
self.pushButton_2.status = 0
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_3.setGeometry(QtCore.QRect(160, 10, 24, 24))
self.pushButton_3.setStyleSheet("border-image: url(:/qrc_files/down.png);")
self.pushButton_3.setText("")
self.pushButton_3.setObjectName("pushButton_3")
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 265, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)

    self.retranslateUi(MainWindow)  
    self.pushButton.clicked.connect(self.pushButton\_1\_click)  
    self.pushButton\_2.clicked.connect(self.pushButton\_2\_click)  
    self.pushButton\_3.clicked.connect(self.pushButton\_3\_click)  
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

def retranslateUi(self, MainWindow):  
    \_translate = QtCore.QCoreApplication.translate  
    MainWindow.setWindowTitle(\_translate("MainWindow", "MainWindow"))

def pushButton\_1\_click(self):  
    pass

def pushButton\_2\_click(self):  
    pass

def pushButton\_3\_click(self):  
    pass

from qrc_files import down
from qrc_files import play
from qrc_files import up

　　上面引入qrc文件，需要自己使用扩展工具pyrcc将图片资源转为python文件再引入，qrc文件内容如下：

down.png

　　以下是down.png生成的down.py文件：

# -*- coding: utf-8 -*-

Resource object code

Created by: The Resource Compiler for PyQt5 (Qt v5.11.2)

WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore

qt_resource_data = b"\
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qt_resource_name = b"\
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"

qt_resource_struct_v1 = b"\
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qt_resource_struct_v2 = b"\
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qt_version = [int(v) for v in QtCore.qVersion().split('.')]
if qt_version < [5, 8, 0]:
rcc_version = 1
qt_resource_struct = qt_resource_struct_v1
else:
rcc_version = 2
qt_resource_struct = qt_resource_struct_v2

def qInitResources():
QtCore.qRegisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)

def qCleanupResources():
QtCore.qUnregisterResourceData(rcc_version, qt_resource_struct, qt_resource_name, qt_resource_data)

qInitResources()

　　入口文件iuMusic.py内容如下：

# -*- coding: utf-8 -*-

Nola

import sys
import os
from PyQt5 import QtWidgets, QtMultimedia, QtCore
from PyQt5.QtGui import QIcon
from music_button import Ui_MainWindow
from qrc_files import pause, play
import random

current_dir = os.path.dirname(os.path.abspath(__file__))
music_dir = current_dir + r'\music_datas'
music_files = os.listdir(music_dir)

class MyPlayer(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super(MyPlayer, self).__init__()
self.setupUi(self)
self.setWindowTitle("Umusic")
self.setWindowIcon(QIcon("MusicCloud.ico"))
self.playlist = QtMultimedia.QMediaPlaylist() # 播放列表
self.playlist.setPlaybackMode(QtMultimedia.QMediaPlaylist.Loop) # 列表循环
self.played = QtMultimedia.QMediaPlayer()
self.played.setPlaylist(self.playlist)
self.played.setVolume(50.0)
self.current_index = random.randint(0, len(music_files) - 1)
self.music_path = [(music_dir + '\\' + music_file) for music_file in music_files]

def pushButton\_1\_click(self):  
    """上一曲"""  
    self.current\_index = self.playlist.currentIndex()  
    self.current\_index -= 1 if self.current\_index != 0 else (len(music\_files) - 1)  
    self.music\_file = music\_files\[self.current\_index\]  
    self.music\_path = music\_dir + '\\\\' + self.music\_file  
    self.playlist.setCurrentIndex(self.current\_index)  
    # self.played.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(music\_files\[self.current\_index\])))  
    self.statusBar().showMessage('播放 --> %s' % self.music\_file)  
    self.played.play()

def pushButton\_2\_click(self):  
    """播放/暂停"""  
    for m in self.music\_path:  
        self.playlist.addMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(m)))  
    # self.playlist.setPlaybackMode(QtMultimedia.QMediaPlaylist.Loop)  
    self.playlist.setCurrentIndex(self.current\_index)  
    if self.pushButton\_2.status == 0:  
        self.pushButton\_2.setStyleSheet("border-image: url(:/qrc\_files/pause.png);")  
        self.pushButton\_2.status = 1  
        self.statusBar().showMessage('播放 --> %s' % music\_files\[self.playlist.currentIndex()\]) # TODO 循环时不显示歌名  
        self.played.play()

    elif self.pushButton\_2.status == 1:  
        self.pushButton\_2.setStyleSheet("border-image: url(:/qrc\_files/play.png);")  
        self.pushButton\_2.status = 0  
        self.statusBar().showMessage('暂停')   # TODO 暂停再播放重新开始播放这首歌，不是从暂停播放进度那刻接着播放  
        self.played.pause()  
    else:  
        self.statusBar().showMessage('未知')

def pushButton\_3\_click(self):  
    """下一曲"""  
    # self.current\_index += 1 if self.current\_index != (len(music\_files) - 1) else 0  
    self.current\_index = self.playlist.currentIndex()  
    self.current\_index += 1 if self.current\_index != (len(music\_files) - 1) else 0

    self.music\_file = music\_files\[self.current\_index\]  
    self.music\_path = music\_dir + '\\\\' + self.music\_file  
    self.playlist.setCurrentIndex(self.current\_index)  
    # self.played.setMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(music\_files\[self.current\_index\])))  
    self.statusBar().showMessage('播放 --> %s' % self.music\_file)  
    self.played.play()

def keyPressEvent(self, e):  # 替换事件处理器函数  
    if e.key() == QtCore.Qt.Key\_Q:  # 按下q退出程序  
        self.close()

if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
player = MyPlayer()
player.move(1000, 600)
player.show()
sys.exit(app.exec_())

　　music_datas目录放了一些自己喜欢的歌：

　　

　　PyCharm配置QtDesigner扩展工具，可参考这篇博文~