utils.py

#!/usr/bin/env python 
# import grp 
import pwd 
import time 
import os 
import stat 

def fileProperty(filepath):
    # return information from given file in this format:
    # -{Unix permissions code} {User} {Group} {fileSize} {Date} {fileName}
    st = os.stat(filepath)
    fileMessage = []
    def _getFileMode():
        modes = [
            stat.S_IRUSR, stat.S_IWUSR, stat.S_IXUSR,
            stat.S_IRGRP, stat.S_IWGRP, stat.S_IXGRP,
            stat.S_IROTH, stat.S_IWOTH, stat.SIXOTH, 
        ]
        mode = st.st_mode 
        fullmode = ''
        fullmode += os.path.isdir(filepath) and 'd' or '-'

        for i in range(9):
            fullmode += bool(mode & modes[i]) and 'rwxrwxrwx'[i] or '-'
        return fullmode 

    def _getFilesNumber():
        return str(st.st_nlink)

    def _getUser():
        return pwd.getpwuid(st.st_uid).pw_name 

    # def _getGroup():
    #     return grp.getgrgid(st.st_gid).gr_name 

    def _getSize():
        return str(st.st_size)

    def _getLastTime():
        return time.strftime("%b %d %H:%M", time.gmtime(st.st_mtime))
    for func in ('_getFileMode()', '_getFilesNumber()', '_getUser()', '_getGroup()', '_getSize()', '_getLastTime()'):
        fileMessage.append(eval(func))
    fileMessage.append(os.path.basename(filepath))
    return ' '.join(fileMessage)