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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def resolve(self, function):
 """ Resolves a function exported by this module. @type function: str or int @param function: str: Name of the function. int: Ordinal of the function. @rtype: int @return: Memory address of the exported function in the process. Returns None on error. """


        # Unknown DLL filename, there's nothing we can do.
        filename = self.get_filename()
        if not filename:
            return None

        # If the DLL is already mapped locally, resolve the function.
        try:
            hlib    = win32.GetModuleHandle(filename)
            address = win32.GetProcAddress(hlib, function)
        except WindowsError:

            # Load the DLL locally, resolve the function and unload it.
            try:
                hlib = win32.LoadLibraryEx(filename,
                                           win32.DONT_RESOLVE_DLL_REFERENCES)
                try:
                    address = win32.GetProcAddress(hlib, function)
                finally:
                    win32.FreeLibrary(hlib)
            except WindowsError:
                return None

        # A NULL pointer means the function was not found.
        if address in (None, 0):
            return None

        # Compensate for DLL base relocations locally and remotely.
        return address - hlib + self.lpBaseOfDll