import os.path
import os

def get_exception_name(output):
    """Reads the stderr output of another Python command and grabs the
    fully qualified exception name"""
    lines = output.split("\n")
    for line in lines[1:]: # skip the "traceback" line
        line = line.rstrip()
        if line[0] == ' ': continue
        if line[-1] == ":":
            return line[:-1]
        else:
            return line

def get_dir_uid(dir):
    """Finds the uid of the person who owns this directory."""
    return os.stat(dir).st_uid