win32serviceutil.py 文件源码

def LocatePythonServiceExe(exeName = None):
    if not exeName and hasattr(sys, "frozen"):
        # If py2exe etc calls this with no exeName, default is current exe.
        return sys.executable

    # Try and find the specified EXE somewhere.  If specifically registered,
    # use it.  Otherwise look down sys.path, and the global PATH environment.
    if exeName is None:
        if os.path.splitext(win32service.__file__)[0].endswith("_d"):
            exeName = "PythonService_d.exe"
        else:
            exeName = "PythonService.exe"
    # See if it exists as specified
    if os.path.isfile(exeName): return win32api.GetFullPathName(exeName)
    baseName = os.path.splitext(os.path.basename(exeName))[0]
    try:
        exeName = win32api.RegQueryValue(win32con.HKEY_LOCAL_MACHINE,
                                         "Software\\Python\\%s\\%s" % (baseName, sys.winver))
        if os.path.isfile(exeName):
            return exeName
        raise RuntimeError("The executable '%s' is registered as the Python " \
                           "service exe, but it does not exist as specified" \
                           % exeName)
    except win32api.error:
        # OK - not there - lets go a-searchin'
        for path in [sys.prefix] + sys.path:
            look = os.path.join(path, exeName)
            if os.path.isfile(look):
                return win32api.GetFullPathName(look)
        # Try the global Path.
        try:
            return win32api.SearchPath(None, exeName)[0]
        except win32api.error:
            msg = "%s is not correctly registered\nPlease locate and run %s, and it will self-register\nThen run this service registration process again." % (exeName, exeName)
            raise error(msg)