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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_random_string():
 """ make a random string, which we can use for bsub job IDs, so that different jobs do not have the same job IDs. """

    
    # set up a random string to associate with the run
    hash_string = "%8x" % random.getrandbits(32)
    hash_string = hash_string.strip()
    
    # done't allow the random strings to be equivalent to a number, since
    # the LSF cluster interprets those differently from letter-containing
    # strings
    while is_number(hash_string):
        hash_string = "%8x" % random.getrandbits(32)
        hash_string = hash_string.strip()
    
    return hash_string