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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 description(filename):
 """Provide a short description."""

    # This ends up in the Summary header for PKG-INFO and it should be a
    # one-liner.  It will get rendered on the package page just below the
    # package version header but above the long_description, which ironically
    # gets stuff into the Description header.  It should not include reST, so
    # pick out the first single line after the double header.
    with open(filename) as fp:
        for lineno, line in enumerate(fp):
            if lineno < 3:
                continue
            line = line.strip()
            if len(line) > 0:
                return line