利用QFileDialog打开文件对话框

python代码：

import sys
from PyQt5.Qt import  QApplication,QWidget,QFileDialog
def getDir():
    '''
    利用pyqt5 获取目录路径
    return:str
    '''
    app = QApplication(sys.argv)
    path = QFileDialog.getExistingDirectory()
    return path

if __name__ == '__main__':
    ret = getDir()
    print(ret)

应用：

在指定的文件夹下自动创建文件！

import sys
from PyQt5.Qt import  QApplication,QWidget,QFileDialog
def getDir():
    '''
    利用pyqt5 获取目录路径
    return:str
    '''
    app = QApplication(sys.argv)
    path = QFileDialog.getExistingDirectory()
    return path

if __name__ == '__main__':
    import os
    path = getDir()
    os.chdir(path)
    for i in range(100):
        new_fileName = "file_{}.txt".format(i)
        with open(new_fileName,'w') as f:
            f.write("My number is {}!
".format(i))
            f.write("Hello World!
")
            f.write("Life is short,I learn Python!")