Why does QFileDialog use slash instead of backslash?

Question

Why "\" and "/" are mixed?

os.getcwd() emits backslash string.

On the other hand, QFileDialog emits forward slash string.

Why?

Example

Please execute this sample code.

from PySide import QtGui
from PySide import QtCore
import sys
import os

class DirectoryPrinter(QtGui.QWidget):
    def __init__(self,parent=None):
        super(DirectoryPrinter,self).__init__(parent=None)

        self.filedialog_pushbutton = QtGui.QPushButton("filedialog",self)
        self.connect(self.filedialog_pushbutton,QtCore.SIGNAL("clicked()"),self.filename_getter)

    def filename_getter(self):
        print("from os.getcwd()",os.getcwd())
        filename = QtGui.QFileDialog.getOpenFileName(self,"Select your file",os.path.expanduser("~"))[0]
        print("from QFileDialog",filename)


def main():
    try:
        QtGui.QApplication([])
    except Exception as e:
        print(22,e)
    directoryprinter = DirectoryPrinter()
    directoryprinter.show()

    sys.exit(QtGui.QApplication.exec_())
if __name__ == "__main__":
    main()

Result (on my occasion)

from os.getcwd(): J:\

from QFileDialog: C:/Users/******/setup.py

Answer 1

This is because QFileDialog uses forward slashes regardless of OS. This makes it easier to write path handling code.

You can use os.path.normpath to converts forward slashes to backward slashes in a path on Windows.