python 獲取本地磁盤剩余空間大小

import os
import platform
import ctypes


def getLocalSpace(folder):
    """
    獲取磁盤剩余空間
    :param folder: 磁盤路徑 例如 D:\\
    :return: 剩余空間 單位 G
    """
    folderTemp = folder
    if not os.path.exists(folderTemp):
        folderTemp = os.getcwd()
    if platform.system() == 'Windows':
        free_bytes = ctypes.c_ulonglong(0)
        ctypes.windll.kernel32.GetDiskFreeSpaceExW(ctypes.c_wchar_p(folderTemp), None, None, ctypes.pointer(free_bytes))
        return free_bytes.value / 1024 / 1024 / 1024
    else:
        st = os.statvfs(folderTemp)
        return st.f_bavail * st.f_frsize / 1024 / 1024