In the following program why is pwd.getpwuid returning my user and group names followed by three commas? Where ar ethe commas coming from?

#!/usr/bin/python3

import os, stat, pwd

dirList = os.listdir()

permissions = (stat.filemode(os.stat(dirList[1]).st_uid))

string = permissions + ' '
string = string + dirList[1]

print(string)

temp = os.stat(dirList[1])


print(temp.st_uid)
temp2 = pwd.getpwuid(temp.st_uid)
print(temp2.pw_gecos)

Your code seems to work for me on OSX 10.9.1 with Python 3.3.3. I see a regular pwd.struct_passwd() tuple-like object returned from pwd.getpwuid(). I don't see the user, group and three commas stuff.

What OS platform are you running on? Have you confirmed the userId returned by temp.st_uid has a valid/complete passwd file entry? Perhaps that might point the way to why the behavior is different?