QFileDialog 的常见用法
用法示例
代码语言：python
代码运行次数：0
复制 def choose_single_local_file(self):
filters_str, default_filter = get_filters()
ret = QFileDialog.getOpenFileName(self, 'Open File', './', filters_str, default_filter)
print('选择单个本地文件', ret)
def choose_multiple_local_files(self):
filters_str, default_filter = get_filters()
ret = QFileDialog.getOpenFileNames(self, 'Open Files', './', filters_str, default_filter)
print('选择多个本地文件', ret)
def choose_single_save_file(self):
filters_str, default_filter = get_save_format()
ret = QFileDialog.getSaveFileName(self, 'Save File', './', filters_str, default_filter)
print('选择单个保存文件', ret)
def choose_single_folder(self):
ret = QFileDialog.getExistingDirectory(self, 'Save Folder', './',
options = QFileDialog.Option.ReadOnly | QFileDialog.Option.ShowDirsOnly)
print('选择保存文件夹', ret)
完整代码
代码语言：python
代码运行次数：0
复制from __future__ import annotations
import sys
from datetime import datetime
from typing import Tuple
from PySide6.QtWidgets import QApplication, QFileDialog, QMainWindow, QPushButton, QVBoxLayout, QWidget
def get_time_str() -> str:
return datetime.now().isoformat(sep = ' ')
def get_filters() -> Tuple[str, str]:
my_filters = [
'All Files (*)',
'Text Files (*.txt)',
'Python Files (*.py)',
'Image Files (*.png *.jpg *.bmp)',
'Video Files (*.mp4 *.avi)',
'Audio Files (*.mp3 *.wav)',
'PDF Files (*.pdf)',
'Json Files (*.json)',
'Excel Files (*.xls *.xlsx)',
'Markdown Files (*.md)',
'Word Files (*.doc *.docx)',
'PowerPoint Files (*.ppt *.pptx)',
'HTML Files (*.html)',
'CSS Files (*.css)',
'JavaScript Files (*.js)',
]
# 将 my_filters 转换为字符串列表,并以;;分隔
my_filters_str = ';;'.join(my_filters)
return my_filters_str, my_filters[2]
def get_save_format() -> Tuple[str, str]:
my_filters = [
'Text Files (*.txt)',
'Python Files (*.py)',
'Image Files PNG (*.png)',
'Image Files JPG (*.jpg)',
'Image Files BMP (*.bmp)',
'Video Files MP4(*.mp4)',
'Video Files AVI(*.avi)',
'Audio Files MP3(*.mp3)',
'Audio Files WAV(*.wav)',
'PDF Files (*.pdf)',
'Json Files (*.json)',
'Excel Files (*.xls)',
'Excel Files (*.xlsx)',
'Markdown Files (*.md)',
'Word Files (*.doc)',
'Word Files (*.docx)',
'PowerPoint Files (*.ppt)',
'PowerPoint Files (*.pptx)',
'HTML Files (*.html)',
'CSS Files (*.css)',
'JavaScript Files (*.js)',
]
# 将 my_filters 转换为字符串列表,并以;;分隔
my_filters_str = ';;'.join(my_filters)
return my_filters_str, my_filters[0]
class MyMainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle('Hello, PySide6!')
self.setToolTip('A PySide6 GUI Application Demo')
self.open_single_file_button = QPushButton('选择单个文件')
self.open_single_file_button.clicked.connect(self.choose_single_local_file)
self.open_multiple_files_button = QPushButton('选择多个文件')
self.open_multiple_files_button.clicked.connect(self.choose_multiple_local_files)
self.save_single_file_button = QPushButton('保存单个文件')
self.save_single_file_button.clicked.connect(self.choose_single_save_file)
self.save_folder_button = QPushButton('选择文件夹')
self.save_folder_button.clicked.connect(self.choose_single_folder)
v_layout = QVBoxLayout()
v_layout.addWidget(self.open_single_file_button)
v_layout.addWidget(self.open_multiple_files_button)
v_layout.addWidget(self.save_single_file_button)
v_layout.addWidget(self.save_folder_button)
container = QWidget()
container.setLayout(v_layout)
self.setCentralWidget(container)
def choose_single_local_file(self):
filters_str, default_filter = get_filters()
ret = QFileDialog.getOpenFileName(self, 'Open File', './', filters_str, default_filter)
print('选择单个本地文件', ret)
def choose_multiple_local_files(self):
filters_str, default_filter = get_filters()
ret = QFileDialog.getOpenFileNames(self, 'Open Files', './', filters_str, default_filter)
print('选择多个本地文件', ret)
def choose_single_save_file(self):
filters_str, default_filter = get_save_format()
ret = QFileDialog.getSaveFileName(self, 'Save File', './', filters_str, default_filter)
print('选择单个保存文件', ret)
def choose_single_folder(self):
ret = QFileDialog.getExistingDirectory(self, 'Save Folder', './',
options = QFileDialog.Option.ReadOnly | QFileDialog.Option.ShowDirsOnly)
print('选择保存文件夹', ret)
if __name__ == "__main__":
app = QApplication(sys.argv)
window = MyMainWindow()
window.show()
app.exec()
运行效果
静态效果
静态界面效果选择本地的单个文件
选择本地文件
自定义文件格式过滤条件选择多个本地文件
选择多个本地文件保存文件
保存文件
自定义保存文件的格式选项选择文件夹
选择本地文件夹
