Python 用os和win32api库模仿DOS命令dir （完整实例）

import os,time
from win32api import GetVolumeInformation as DiskVolume
from win32api import GetDiskFreeSpaceEx as FreeSpace
def attrib(fn):
    from win32api import GetFileAttributes as attr
    ret=str(bin(attr(fn)))
    del attr
    if ret[-2]=='0':
        return True
    else:
        return False
def pyDir(path=None,para=None):
    if path==None: path=os.getcwd()
    dt=lambda x:time.strftime('%Y/%m/%d  %H:%M   ',time.localtime(x))
    cnCount=lambda str:len([i for i in str if '\u4e00'<=i<='\u9fff'])
    _time=dt(os.path.getmtime(path))
    print(u' 驱动器 '+path[0].upper()+ u' 中的卷是 '+DiskVolume(path[0:2])[0])
    tmp=str(hex(DiskVolume(path[0:2])[1])).upper()
    if tmp[:2]=='0X': tmp=tmp[2:]
    diskVol=tmp[:4]+'-'+tmp[4:]
    print(u' 卷的序列号是',diskVol)
    print('\n '+path+u' 的目录\n')
    if path[-2:]!=':\\'and para!='/w':
        print(_time,'<DIR>'.ljust(14),'.')
        print(_time,'<DIR>'.ljust(14),'..')
    if path[-1]!='\\':
        path+='\\'
    if para==None:
        files=[i for i in os.listdir(path) if attrib(path+i)]
        _time=[dt(os.path.getmtime(path+i)) for i in files]
        _size=[os.path.getsize(path+i) for i in files]
        for i,fname in enumerate(files):
            print(_time[i],'<DIR>'.ljust(14) if os.path.isdir(path+fname) else format(_size[i],',').rjust(14),fname)
    elif para=='/w':
        files=[i for i in os.listdir(path) if attrib(path+i)]
        lenths=max([len(i)+cnCount(i)+2 if os.listdir(path) else len(i)+cnCount(i) for i in os.listdir(path)])
        if lenths<=16:
            fw=16
        elif 16<lenths<=20:
            fw=20
        elif 20<lenths<=40:
            fw=40
        elif lenths>40:
            fw=80
        if path[-2:]!=':\\':
            print('[.]'.ljust(fw),end='')
            print('[..]'.ljust(fw),end='')
        for i,fname in enumerate(files):
            if (i+2)*fw%80==0: print()
            cnCount=lambda str:len([i for i in str if '\u4e00'<=i<='\u9fff'])
            print((fname.ljust(fw-cnCount(fname)) if os.path.isfile(path+fname) else '['+fname+']').ljust(fw-cnCount(fname)),end='')
        print()
    fileSize=format(sum([os.path.getsize(path+i) for i in files if os.path.isfile(path+i)]),',')
    fileCount=len([i for i in files if os.path.isfile(path+i)])
    dirCount=len([i for i in files if os.path.isdir(path+i)])
    if path[-2:]!=':\\':dirCount+=2
    diskSize=format(FreeSpace(path[:2])[0],',')
    print(f'{fileCount} 个文件'.rjust(20),f' {fileSize} 字节'.rjust(20))
    print(f'{dirCount} 个目录'.rjust(20),f'{diskSize} 可用字节'.rjust(20))
    print()
pyDir('D:\\test','/w')
pyDir('D:\\test')
pyDir('E:\\')

  TCHAR       lpVolumeNameBuffer[1024];            //硬盘卷标名称   
  DWORD     dwVolumeSerialNumber;                 //序列号   
  DWORD     dwMaximumComponentLength;     //文件名最大长度   
  DWORD     FileSystemFlags;                            //文件系统标志   
  TCHAR       lpFileSystemNameBuffer[1024];    //文件系统名称   

LARGE_INTEGER　　lpFreeBytesAvailableToCaller    //调用者可用空间的字节数
LARGE_INTEGER　　lpTotalNumberOfBytes              //磁盘总容量的字节数
LARGE_INTEGER　　lpTotalNumberOfFreeBytes      //磁盘的可用空间的字节数