python打开Windows的"打开"对话框

用ctypes模块是可以的。但是也可以去system("getopenfilename.exe"):

tdm-gcc-10.3.0.exe 61,647KB. 自带了Windows的头文件和库。

#define WIN32_LEAN_AND_MEAN
#define VC_EXTRALEAN
#define _WIN32_WINNT _WIN32_WINNT_WIN7
#include <windows.h>
#include <commdlg.h>
#include <stdio.h>
#include <string.h>

#define OFN_FORCESHOWHIDDEN    0x10000000

int main() {
    WCHAR*    s = wcsdup(GetCommandLineW());
    wprintf(L"%s\n", s);
    // https://docs.microsoft.com/en-us/windows/win32/api/commdlg/nf-commdlg-getopenfilenamew
    // https://docs.microsoft.com/en-us/windows/win32/api/commdlg/ns-commdlg-openfilenamea
    // g++ getopenfilename.cpp -lcomdlg32
    // strip a.exe 24,078 bytes
    OPENFILENAMEW    ofn;
    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.lpstrFilter = L"Text Files\0*.txt\0All Files\0*.*\0";
    WCHAR    strFile[MAX_PATH] = L"";
    ofn.lpstrFile = strFile;
    ofn.nMaxFile = MAX_PATH;
    ofn.Flags = OFN_EXPLORER | OFN_ENABLESIZING | OFN_FILEMUSTEXIST |
        OFN_FORCESHOWHIDDEN | OFN_LONGNAMES;
    GetOpenFileNameW(&ofn);
    if (FILE* f = fopen("getopenfilename-out.txt", "wb")){
        char    s[MAX_PATH * 3];
        WideCharToMultiByte(CP_UTF8, 0, strFile, -1, s, sizeof(s), NULL, NULL);
        puts(s);
        //fwprintf(f, L"%s\n", strFile), fclose(f);
        fprintf(f, "%s\n", s), fclose(f);
    }
}

pywin32也是可以的: \Lib\site-packages\pywin32.chm :
int = GetOpenFileName(OPENFILENAME)
Creates an Open dialog box that lets the user specify the drive, directory, and the name of a file or set of files to open.
OPENFILENAME : string/bytes
A string packed into an OPENFILENAME structure, probably via the struct module.