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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_timestamp(length):
 """Get a timestamp of `length` in string"""

    s = '%.6f' % time.time()
    whole, frac = map(int, s.split('.'))
    res = '%d%d' % (whole, frac)
    return res[:length]