How to use Python to make a multifunctional music player

1. Ideas for making a player

Ideas for making a multifunctional music player

Determine the needs and functions of the player, such as which audio formats are supported, playlist management, and looping Play, pause, progress bar display, etc.

You can choose a suitable Python GUI library, such as Tkinter, PyQt, etc. These libraries can help us implement various functions of the player in the graphical interface.

Create player windows, menus, buttons, lists and other controls, and layout and arrange them.

Write the logic code of the player, such as the implementation of functions such as reading audio files, playing, pausing, stopping, switching songs, looping playback, etc.

With the help of the event binding mechanism of the GUI library, the events of the control are connected with the logic code, so that the user can use various functions of the player by clicking the control.

Test various functions of the player, and make corrections and optimizations.

2. Knowledge points and required modules for making a player

Making a multifunctional music player requires the following knowledge points and modules:

You can use Python's graphical user interface Libraries such as Tkinter, PyQt, wxPython, etc. for GUI programming.

Audio playback: Use Python audio libraries such as Pygame, PyAudio, pydub, etc. to realize the playback of audio files.

File operation: Use Python's os, glob and other modules to read, delete, search and other operations on audio files.

Use Python's threading module to implement multi-threading, allowing audio playback and GUI operations to proceed in parallel.

Data structure: Use Python's list and other data structures to manage music lists, playback history and other information.

Network programming: Use Python's socket, Requests and other modules to implement functions such as online music playback and lyrics downloading.

The Python modules that can be used to implement the above functions are:

Tkinter, Pygame, PyAudio, pydub, os, glob, threading, socket, Requests, etc.

3. Player code display

The following is the logic code of the Python multi-functional music player:

import pygame
import os

pygame.init()

class MusicPlayer:
    def __init__(self):
        self.playing = False
        self.paused = False
        self.volume = 0.5
        self.playing_index = None
        self.playlist = []

    def load_playlist(self, folder_path):
        self.playlist = []
        for filename in os.listdir(folder_path):
            if filename.endswith('.mp3'):
                self.playlist.append(os.path.join(folder_path, filename))

    def play(self, index):
        if self.playing_index == index:
            return
        if self.playing:
            pygame.mixer.music.stop()
            self.playing = False
        self.playing_index = index
        pygame.mixer.music.load(self.playlist[self.playing_index])
        pygame.mixer.music.set_volume(self.volume)
        pygame.mixer.music.play()
        self.playing = True
        self.paused = False

    def pause(self):
        if not self.playing:
            return
        if self.paused:
            pygame.mixer.music.unpause()
            self.paused = False
        else:
            pygame.mixer.music.pause()
            self.paused = True

    def stop(self):
        if not self.playing:
            return
        pygame.mixer.music.stop()
        self.playing = False
        self.paused = False

    def set_volume(self, volume):
        self.volume = volume
        if self.playing:
            pygame.mixer.music.set_volume(self.volume)

    def next(self):
        if not self.playing:
            return
        self.playing_index = (self.playing_index + 1) % len(self.playlist)
        self.play(self.playing_index)

    def prev(self):
        if not self.playing:
            return
        self.playing_index = (self.playing_index - 1) % len(self.playlist)
        self.play(self.playing_index)

    def loop(self):
        if not self.playing:
            return
        pygame.mixer.music.queue(self.playlist[self.playing_index])

music_player = MusicPlayer()
music_player.load_playlist('music_folder_path')

def mainloop():
    while True:
        # 读取键盘事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE:
                    music_player.pause()
                elif event.key == pygame.K_s:
                    music_player.stop()
                elif event.key == pygame.K_RIGHT:
                    music_player.next()
                elif event.key == pygame.K_LEFT:
                    music_player.prev()
                elif event.key == pygame.K_l:
                    music_player.loop()

        # 设置音量
        volume = pygame.key.get_pressed()[pygame.K_UP] - pygame.key.get_pressed()[pygame.K_DOWN]
        if volume != 0:
            new_volume = music_player.volume + volume * 0.05
            new_volume = min(max(new_volume, 0), 1)
            music_player.set_volume(new_volume)

        # 显示当前播放状态
        if music_player.playing:
            print('Now playing:', music_player.playlist[music_player.playing_index])
            print('Volume:', music_player.volume)
            print('Playing:', music_player.playing)
            print('Paused:', music_player.paused)

        pygame.time.wait(100)

if __name__ == '__main__':
    mainloop()

In the above code, the MusicPlayer class encapsulates the music player Logical function, the load_playlist() method is used to read the audio file directory and store the audio file path into the playlist, the play() method is used to start playing a certain song, the pause() method is used to pause/resume playback, stop () method is used to stop playing, set_volume() method is used to set the volume, next() and prev() methods are used to switch songs, and loop() method is used to loop playback.

In the mainloop() method, use the pygame.event.get() method to read keyboard events and call the methods of the MusicPlayer class based on different key operations. Use the pygame.key.get_pressed() method to read the volume adjustment keyboard event, and call the set_volume() method to set the volume according to the key press. Finally, please use the pygame.time.wait() method to let the program sleep for 100 milliseconds to prevent excessive CPU usage.

This code can be used as a basic template and can be expanded according to your own needs, such as adding a display interface, etc.

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