<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_temp_filename(suffix=None):
 """ return a string in the form of temp_X, where X is a large integer """

    file = tempfile.mkstemp(suffix=suffix or "", prefix="temp_", dir=os.getcwd()) # or "" for Python 2 compatibility
    os.close(file[0])
    return file[1]