tkinter.filedialog.askopenfilename() fails with "SharedMemory read faild"

[ye-xue]

Bug report

Bug description:

# Add a code block here, if required

from tkinter import filedialog
filedialog.askopenfilename()

CPython versions tested on:

3.12

Operating systems tested on:

Windows

[yzztin]

cant reproduce on linux or windows

[ye-xue]

I'm still having problems with it, is it a version issue?

[yzztin]

I think the error seems caused by your IDE, could you pls try the code on a new terminal but not your IDE?

[ye-xue]

Using the terminal directly will also have this problem

[ghgamma]

I got the same error when i try to call askopenfilename in a loop expression
for item in ['a',','b','c','d']
fn = dlg.askdirectory(title=f"selelect {item} directoy", initialdir=v_src.get()) if item == "c" else dlg.askopenfilename(title=f"sel {item} filename", initialdir=os.getcwd())

[terryjreedy]

@ghgamma What Python version? The previous reports were all for 3.12, which now only gets security fixes.

@ye-xue If you can, please retry with plain vanilla installs of 3.13 and 3.14 (beta).

[ghgamma]

@ghgamma What Python version? The previous reports were all for 3.12, which now only gets security fixes.

@ye-xue If you can, please retry with plain vanilla installs of 3.13 and 3.14 (beta).

I run in python 3.8.10 x64bit before. But got the same error while changed to uv virtual env,snapshot as below:

[terryjreedy]

@ghgamma You ran in 3.12.10 also. Can you run later version? (I am not familiar with uv.) Appears you are also on Windows (PS = PowerShell?).

I just tested with installed 3.13.4 in IDLE and locally built main in REPL with no problem.

What bizarre is that searching Windows "SharedMemory read failed" gets 0 hits on both Google and DDG except for this issue. Bing adds in some Chinese hits which I cannot read.

[ghgamma]

@ghgamma You ran in 3.12.10 also. Can you run later version? (I am not familiar with uv.) Appears you are also on Windows (PS = PowerShell?).

I just tested with installed 3.13.4 in IDLE and locally built main in REPL with no problem.

What bizarre is that searching Windows "SharedMemory read failed" gets 0 hits on both Google and DDG except for this issue. Bing adds in some Chinese hits which I cannot read.

I tested on 3.13.4 IDE Error disappeared. but while switched to VSCode or Powershell, shared memory faild error showing again.
demo code

import tkinter as tk
from tkinter import messagebox as msg
from tkinter import filedialog as dlg
import os

def choseSrc():
    ack = msg.askyesno(title="mml", message="keep history?")
    if ack:
        return
    for ctr in range(4):
        fn = dlg.askdirectory(title="select directory", initialdir=os.getcwd())
        if os.path.exists(fn):
            print(f"trigger dlg {ctr + 1} times")

if __name__ == "__main__":
    win = tk.Tk()
    win.title("demo_gui")
    win.resizable(False, False)
    tk.Button(win, text="selectDirecotory", command=choseSrc).grid(row=0, column=0)
    win.mainloop()

test on python 3.13.4 IDE:

test on powershell:

[ye-xue]

I feel like there's a problem with the system, and I don't have it anymore after reinstalling the system.