Python文件路径和名称检索

Question

Alright so I've made a save as button in python and was wondering how do I retrieve the file path from where it was saved. I also was wondering if the name is changed during saving how to know what that is. If I try to call the file name in a different .py file I receive a error code. Code for the button is below

Thanks

import tkinter, tkinter.constants, tkinter.filedialog

class tkFile(tkinter.Frame):

    def __init__(self, root):

        tkinter.Frame.__init__(self, root)
        button_opt = {'fill': tkinter.constants.BOTH, 'padx': 5, 'pady': 5}
        tkinter.Button(self, text='Save As',command=self.asksaveasfilename).pack(**button_opt)

        self.file_opt = options = {}
        options['filetypes'] = [('all files', '.*'), ('csv files', '.csv')]
        options['initialfile'] = 'data.csv'
        options['parent'] = root

    def asksaveasfilename(self):
        filename = tkinter.filedialog.asksaveasfilename(**self.file_opt)

        if filename:
            return open(filename, 'w')

if __name__=='__main__':
    root = tkinter.Tk()
    tkFile(root).pack()
    root.mainloop()

The code that I want to call the name into is below. Specifically I'm looking to call the name from the save as button to a different file. The error code states self in undefined.

name = savePathButton.tkFile.asksaveasfilename(self)

name 'self' is not defined

Answer 1

You can import os , and use os.path.dirname(os.path.realpath(__file__)) to retrieve the file location.

For the actual file name, you could use os.listdir(os.getcwd()) which would return a list of file names within the directory.